B2B Industrial Parts & MRO Supply Catalog

Problem and target customer

Why this exists

Customer problem

Maintenance and operations buyers waste hours juggling vendor PDFs, spreadsheets, and email threads to find the right industrial part, confirm specs, get a quote, and restock repeat items. The current process is fragmented, slow, and error-prone for non-expert purchasers.

Who pays

Maintenance, repair, and operations (MRO) procurement managers at small and mid-sized industrial businesses who buy replacement parts, consumables, and repair components on a recurring basis.

Business model

Paid workspace subscription billed monthly per buyer seat, with a free read-only catalog tier for occasional purchasers.

Editorial note

Industrial MRO buyers lose hours per reorder chasing the same parts list across email and spreadsheets. A focused catalog that ties part number search, quote requests, and saved reorder lists into one workspace removes the manual stitching that slows maintenance purchasing.

The MVP is intentionally narrow: one buyer, one supplier relationship per workspace, and one repeatable path from search to reorder. Anything that does not serve that path is excluded so the first version can ship and be tested with real procurement managers.

Acceptance is measured by a buyer completing a quote request and a saved-list reorder inside a single session without contacting the supplier by phone or email.

Choose your next step

What do you need next?

Evaluate the operating tradeoffs quickly, or inspect how to build the MVP.

Evaluate this ideaSee the cost and deployment preview

Compare the three operating paths at the default workload before opening the full calculator.

See cost preview Build this ideaInspect the build blueprint

Review MVP scope, workflow, states, data rules, architecture, and acceptance criteria.

Open blueprint

Evaluation preview

What would it take to run?

Directional infrastructure estimates for the current 400 orders assumption. Open the full calculator when you are ready to change it.

Open full cost and deployment

ManagedSelected

$30-$90/ month

Managed app hosting, database, backups, and basic observability for the ecommerce workflow.

Lowest operating effort

Lean self-hosted

$13-$53/ month

One small VPS running the app, database, media volume, and backup job.

Lowest baseline cost

More control

$50-$150/ month

Separate app, data, storage, and worker capacity for cleaner operations.

Most separation and control

Build blueprint

Build the first paid use case

Product goal

Who it serves and what it must change

Target user: Maintenance and operations procurement managers at small and mid-sized industrial businesses
Problem: Industrial parts purchasing is fragmented across vendor PDFs, spreadsheets, and email, making quote requests and reorders slow and error-prone
Measurable outcome: A buyer completes one quote request and one saved-list reorder in a single session without contacting the supplier by phone or email

MVP scope

What ships now and what waits

Included

Part number search with spec sheet viewer
Quote request form tied to a saved parts list
Saved lists for repeat orders and past job parts
Order status tracking from quote to delivery
Buyer workspace with seat-based access

Excluded

Supplier-side inventory management
Contract pricing and negotiated rate engines
Multi-currency tax and duty calculation
Mobile native applications
Public marketplace listings from third-party sellers

UX and user flow

Screens, actions, and states

Catalog search with part number input and result list

Catalog search with part number input and result list

Review details

Part detail page with spec sheet and add-to-list action

Part detail page with spec sheet and add-to-list action

Review details

Quote request form with line items, quantity, and required-by date

Quote request form with line items, quantity, and required-by date

Review details

Saved lists page with reorder button

Saved lists page with reorder button

Review details

Order detail page with status timeline

Order detail page with status timeline

Review details

Primary flow

Buyer enters a part number on the catalog search screen
Buyer opens the part detail page and adds the item to a saved list or a new quote request
Buyer submits the quote request with quantity and required-by date
Supplier returns pricing through Make and the buyer accepts the quote
Buyer reorders a saved list to generate a new quote request pre-filled from the prior order

Loading, empty, and error states

Empty search results with suggested part numbers
Quote request pending supplier response
Quote accepted and order created
Order shipped with tracking number added
Saved list with zero items after removal

Core entity outline

Entities and business rules

Part

Part

Fields: id, status
Relations: Supports the primary workflow

SavedList

SavedList

Fields: id, status
Relations: Supports the primary workflow

SavedListItem

SavedListItem

Fields: id, status
Relations: Supports the primary workflow

QuoteRequest

QuoteRequest

Fields: id, status
Relations: Supports the primary workflow

QuoteLineItem

QuoteLineItem

Fields: id, status
Relations: Supports the primary workflow

Order

Order

Fields: id, status
Relations: Supports the primary workflow

Business rules

A quote request must contain at least one line item with a positive quantity
A saved list can only be reordered by the buyer who owns it
An accepted quote request converts into exactly one order
Order status transitions follow pending -> accepted -> shipped -> delivered
Part numbers must be unique within the catalog

Architecture and data flow

Components, integrations, and controls

Lovable front-end pages for catalog, quote, and order screens

Lovable front-end pages for catalog, quote, and order screens

Railway Postgres database for parts, quotes, orders, and saved lists

Railway Postgres database for parts, quotes, orders, and saved lists

Railway object storage for spec sheet PDFs

Railway object storage for spec sheet PDFs

Make scenarios for supplier email and webhook glue

Make scenarios for supplier email and webhook glue

Scheduled Railway job for quote follow-up reminders

Scheduled Railway job for quote follow-up reminders

Integrations

Make email forwarding for new quote requests
Make webhook receiver for supplier quote replies
Make webhook sender for order status updates
Railway object storage for spec sheet uploads

Data flow

Buyer submits a quote request from a Lovable page
Railway persists the quote request and line items
Make forwards the quote request to the supplier inbox
Supplier replies with pricing and Make posts the reply to Railway
Railway updates the quote status and notifies the buyer in Lovable

Failure handling

Retry Make email forwarding up to three times on transient SMTP errors
Mark quote requests as stale after 72 hours without supplier response
Fallback to manual supplier contact when webhook delivery fails twice

Security

Per-seat authentication on the Lovable workspace
Row-level access so buyers only see their own saved lists and orders
Signed URLs for spec sheet downloads from object storage
Webhook signature verification on Make inbound webhooks

Rate limits

Quote request submissions capped at 20 per buyer per day
Spec sheet downloads capped at 100 per buyer per hour
Webhook receivers reject payloads above 1 MB

Deliverables and acceptance

Definition of done for the MVP

Deliverables

Lovable catalog search and part detail pages
Lovable quote request, saved list, and order status pages
Railway Postgres schema with seed parts catalog
Make scenarios for supplier email and webhook glue
Spec sheet PDFs stored in Railway object storage

Acceptance criteria

A buyer can search by part number and open a spec sheet in under two seconds
A buyer can submit a quote request with at least one line item and receive a confirmation
A buyer can reorder a saved list and generate a new quote request pre-filled from the prior order
An accepted quote converts into an order with a visible status timeline
A buyer cannot view another buyer's saved lists or orders

Recommended stack

Enough technology for the first version

Implementation

Lovable for the buyer-facing catalog, quote, and order pages

Implementation

Railway for the relational database, file storage, and background jobs

Implementation

Make for routing quote request emails and order status webhooks between the catalog and supplier inbox

Why this is sufficient

Lovable ships the buyer workspace quickly with auth and forms, Railway holds durable order and quote records with object storage for spec sheets, and Make handles the bounded email and webhook glue to suppliers without inventing a custom integration layer.

Not required for the MVP

Custom supplier portalNative mobile appsAI-driven part recommendation engineReal-time chat with suppliers

Next stepTurn the blueprint into an execution plan

Copy the build prompt, model the operating cost, and choose where to deploy.

Build and ship

Execution

Build, price, and deploy the MVP

Once the blueprint is clear, use the prompt, cost model, and deployment options to start building.

Build prompt

Copy this into a builder

lovable

Build prompt

Your build prompt is ready

Open the prompt pack whenever you are ready to take this blueprint into your builder.

Based on the blueprintReady for your builderFollow-up steps included

Cost calculator

Model the MVP operating cost

A technical run-cost estimate for the first production version. Team, acquisition, payment fees, and business COGS are excluded.

Estimated monthly total$30-$90

$15-$45 per 200 orders

Orders processed / month400 orders

Selected pathEasiest

Pricing checkedAug 2, 2026

Cost breakdown

$30-$90 per month

Low and high values allow for usage variance and plan headroom.

Managed infrastructure

Managed app hosting, database, backups, and basic observability for the ecommerce workflow.

50K orders included, then $8-$20 per 100K orders

$25-$65

Object storage

Object storage is implied by the source workflow or feature list.

Monthly allowance from this idea's operating profile

$5-$25

Included

Application hosting
Relational database
Basic backups
products, shopper choices, and orders state
Object storage

Not included

Paid acquisition
Founder or team time
Tax or legal review
Custom enterprise procurement

Pricing basis

The estimate combines the selected infrastructure path, required operating modules, selected optional modules, and usage above included monthly allowances. Taxes and regional uplifts are excluded.

Managed app baseline Amazon S3 pricing

Deployment options

Pick the operational tradeoff

Choose based on operating preference, not only the headline price.

EasiestRecommended

Railway

Fast Docker deployment for the app, database, worker, and preview workflow without managing a VPS.

$15-90/month before usage-heavy add-ons

Good fit

Fast setup
Low starting cost
Good preview workflow

Limitation

Usage billing needs active monitoring as traffic and jobs grow.

Open Railway

Cheapest

Vultr

Run the app, worker, and database on one small Vultr VPS with Docker Compose and explicit backups.

$8-60/month before managed add-ons

Good fit

Predictable baseline
Portable setup
Room for workers

Limitation

You own patching, backups, monitoring, and incident response.

Deploy on Vultr View the lean VPS guide

More control

DigitalOcean

Separate application, worker, data, storage, and backup responsibilities as the workload grows.

$10-120/month before managed add-ons

Good fit

Cloud VPS control
Global regions
Room for workers

Limitation

You own server setup, patching, backups, and operational monitoring.

Explore DigitalOcean View the separated cloud guide

Start building

Prototype, automate, then deploy

Recommended route

01Vibe-coding builderBuild the buyer catalog and quote workspace in Lovable

Create the part number search page, spec comparison view, quote request form, saved lists panel, and order status timeline as authenticated Lovable pages backed by the Railway database.

Open Lovable 02AutomationWire supplier email and webhook glue in Make

Configure Make scenarios that forward new quote requests to the supplier inbox, capture supplier replies, and post order status webhooks back to the catalog.

Open Make 03DeployRun the catalog database and storage on Railway

Provision the Railway Postgres database for parts, quotes, orders, and saved lists, plus object storage for spec sheet PDFs and a scheduled job for quote follow-up reminders.

Open Railway

B2B Industrial Parts & MRO Supply Catalog

Is this worth validating?

Build this if

Avoid this if

Validate first

Why this exists

Customer problem

Who pays

Business model

What do you need next?

What would it take to run?

Build the first paid use case

Who it serves and what it must change

What ships now and what waits

Included

Excluded

Screens, actions, and states

Primary flow

Loading, empty, and error states

Entities and business rules

Business rules

Components, integrations, and controls

Integrations

Data flow

Failure handling

Security

Rate limits

Definition of done for the MVP

Deliverables

Acceptance criteria

Enough technology for the first version

Lovable for the buyer-facing catalog, quote, and order pages

Railway for the relational database, file storage, and background jobs

Make for routing quote request emails and order status webhooks between the catalog and supplier inbox

Why this is sufficient

Not required for the MVP

Build, price, and deploy the MVP

Copy this into a builder

Your build prompt is ready

Model the MVP operating cost

Usage assumptions

$30-$90 per month

Included

Not included

Pricing basis

Pick the operational tradeoff

Railway

Good fit

Limitation

Vultr

Good fit

Limitation

DigitalOcean

Good fit

Limitation

Prototype, automate, then deploy

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