B2B Marketplace Builder
Build a B2B Marketplace
B2B transactions still happen through emails, phone calls, and spreadsheets. That inefficiency is your opportunity.
Build a B2B marketplace that brings business buyers and sellers online — without enterprise development costs.
No coding required. Launch in days, not months.
Watch the Full Build
Building a B2B Marketplace with AI
From zero to a live wholesale marketplace — step by step
0:00
Why "sexy" ideas fail
2:06
The B2B spectrum
3:36
Hidden opportunities
5:57
Live build demo
The Problem
How Trillions of Dollars Still Change Hands
This is what a typical B2B transaction looks like today. Companies aren't moving online because it's trendy — they're doing it because staying offline is inefficient and expensive.
Email-Driven Ordering
Orders placed via email threads, attachments, and back-and-forth
Slow, error-prone, and impossible to scale
Phone-Based Sales
Buyers call suppliers one-by-one to compare and negotiate
No transparency, no easy comparison
Spreadsheet Catalogs
Product lists shared as Excel files or PDFs
Always outdated, hard to search, no real-time stock
Manual Processes Everywhere
Invoicing, follow-ups, and reorders handled manually
High overhead, limited growth capacity
The Opportunity
One wholesale order can be worth $2,000+. One B2C order averages $30. You don't need millions of users — you need a small number of high-value, repeat customers. You do the math.
Core Framework
The 3 Levels of B2B Marketplaces
B2B marketplaces are not all the same — they range from simple to enterprise. Most founders should start simple and only add complexity when real demand requires it.
B2B-Lite Marketplace
Where most founders should start
- Wholesale platforms
- B2B services marketplace
- Lead-driven marketplace
- Supplier directories with transactions
- Simple pricing
- Card or bank transfer payments
- Manual onboarding
- Seller approval
B2B-Plus Marketplace
Scale when demand requires it
- Company accounts
- Tiered or volume pricing
- Light approval flows
- Custom catalogs per buyer
- Business verification
- Recurring orders
- Account management
- API integrations
Enterprise B2B Marketplace
Prometora as your foundation + custom integrations
- RFQ / RFP workflows
- Purchase orders
- Net-30 / Net-60 terms
- ERP integrations
- Procurement systems
- Complex approval chains
- Custom invoicing
- Compliance requirements
Built on Prometora with custom integrations — talk to us
You can build all three levels with Prometora — self-serve for Level 1–2, custom builds for Level 3
Most successful B2B marketplaces started at Level 1.
Hidden Opportunities
6 B2B Niches Where Money Already Moves Offline
The best B2B marketplace opportunities don't sound exciting at a startup meetup. They sound boring to explain at a dinner party. That's usually a good sign.
Wholesale Food & Beverage
Connect restaurants, cafes, and retailers with wholesale food suppliers and distributors.
Think: a Faire for local restaurant suppliers
Who's already paying for this: Restaurants, cafes, grocery stores
Industrial Parts & Equipment
Spare parts, components, and industrial supplies for manufacturing and maintenance.
Think: an Amazon Business for machine parts
Who's already paying for this: Manufacturers, maintenance teams, contractors
Professional B2B Services
Accounting, compliance, marketing, and operations services — verticalized for a specific industry.
Think: an Upwork for accounting firms
Who's already paying for this: SMBs needing specialized business services
Business Equipment Rentals
Construction equipment, event infrastructure, office furniture, and commercial vehicles.
Think: a Fat Llama for construction equipment
Who's already paying for this: Contractors, event planners, growing businesses
Trade-Specific Suppliers
Niche materials and supplies for specific trades — plumbing, electrical, HVAC, or beauty.
Think: a niche Alibaba for plumbing supplies
Who's already paying for this: Tradespeople, salon owners, specialized buyers
Private Buying Groups
Closed marketplaces for franchises, associations, or cooperatives to source from approved vendors.
Think: a Costco-style marketplace for franchise networks
Who's already paying for this: Franchise networks, co-ops, industry associations
Pick one niche. Find 10 sellers. That's your starting point.
B2B Revenue Model
Calculate Your Marketplace Revenue
In B2B, you don't need millions of transactions. Higher order values mean even a small commission adds up fast.
Your Settings
Break-Even Analysis
Orders to Break Even
21
GMV at Break Even
$1,050
You're 79 orders above break-even! Your subscription is covered.
Net profit per order: $4 (your 10% commission minus 1.5% Prometora fee)
Per Transaction Breakdown
What you earn as marketplace owner
Seller side (for reference)
Monthly Projections
Yearly Projections
Revenue Growth Chart
Visualize how your net revenue scales with order volume
Monthly orders → Net revenue/month
Scaling Projections
See how your revenue grows as your marketplace scales (based on $50 AOV, 10% commission, Professional plan)
| Orders | GMV | Commission | Fees | Net |
|---|---|---|---|---|
| 50 | $2,500 | $250 | -$127 | $124 |
| 100Current | $5,000 | $500 | -$164 | $336 |
| 250 | $12,500 | $1,250 | -$277 | $974 |
| 500 | $25,000 | $2,500 | -$464 | $2,036 |
| 1,000 | $50,000 | $5,000 | -$839 | $4,161 |
Ready to Start Earning?
With 100 orders at $50 AOV, you could be earning $336/month. Start building your marketplace today.
Why B2B Math Works
B2C marketplace (typical):
- $30 average order
- 10% commission = $3 per transaction
- Need thousands of orders/month
- High marketing cost per user
B2B marketplace:
- $500–$5,000+ average order
- 5% commission = $25–$250 per transaction
- Dozens of orders can sustain the platform
- Repeat buyers = compounding revenue
Built-In Features
Everything You Need for a B2B Marketplace
Prometora includes the features B2B buyers and sellers need — out of the box, no custom development.
Seller Approval
Review and approve every seller before they can list. Full control over who joins your marketplace.
Custom Business Fields
Add B2B-specific listing fields like MOQ, lead time, business type, and bulk pricing.
Stripe Connect Payments
Automatic payment splitting between you and your sellers. Commission collected on every transaction.
Seller Storefronts
Each supplier gets their own professional page to showcase products and build credibility.
Order Management
Sellers manage orders, fulfillment, and communication with buyers from their dashboard.
Built for Repeat Business
B2B thrives on repeat orders. Buyers can reorder, save favorites, and build ongoing supplier relationships.
How It Works
Launch Your B2B Marketplace in 3 Steps
Pick Your B2B Niche
Focus on one buyer type, one seller type, and one core workflow. Wholesale food, industrial parts, professional services — the more specific, the easier to win.
Build with AI
Describe your B2B marketplace to Prometora's AI. It generates your pages, categories, listing fields, and content. Add B2B-specific fields like MOQ, lead times, and business type. No code required.
Onboard Suppliers
Invite suppliers to apply. Review and approve each one. They create their storefronts, list products, and start selling. You earn commission on every transaction.
Build It Yourself
Start at $39/month
Perfect for founders who want to move fast. Build, test, and iterate your B2B marketplace on your own terms.
View All PlansDone For You
White Glove Setup
Already running a business? We'll build and configure your B2B marketplace for you — custom domain, design, payment setup, and launch strategy.
Learn MoreStripe Connect
Secure payments
SSL Encrypted
All data protected
30-Day Guarantee
Money back, no questions
Custom Domain
Your brand, your URL
Frequently Asked Questions
For B2B, this handles card and bank transfer payments. If your market requires invoicing or net-30/60 terms, those fall into enterprise territory. Learn more in our revenue guide.
We also offer a White Glove Setup ($3,999 one-time) where we build and configure your B2B marketplace for you — ideal if you want expert setup without the enterprise price tag.
We offer enterprise solutions for larger operations — reach out and we'll find the right fit.
Ready to Build Your B2B Marketplace?
The biggest mistake founders make in B2B marketplaces isn't choosing the wrong tech. It's starting too heavy, too early.
Start Building — $39/mo30-day money-back guarantee. No credit card required to explore.