The verdict in three sentences
A B2B platform is not a consumer store: it handles negotiated per-account pricing, quick ordering and ERP/stock synchronization. In Miami, budget 28,000 to 78,000 USD and 4 to 8 months. The defining choice is B2B SaaS vs custom-built: SaaS starts fast and costs less, custom wins as soon as your pricing rules leave the standards.
2026 budget for a B2B platform
Cost depends on catalog size, number of accounts and integration depth. 2026 ballpark:
| Item | 2026 range (USD) | Timeline |
|---|---|---|
| Scoping and specifications | 3,500 - 9,000 | 2 - 4 weeks |
| Full B2B platform | 28,000 - 78,000 | 4 - 8 months |
| ERP/stock integration | 9,000 - 28,000 | 4 - 8 weeks |
| Catalog and account migration | 3,500 - 14,000 | 3 - 6 weeks |
| Maintenance (per month) | 900 - 2,800 | recurring |
| Managed hosting | 220 - 800/month | recurring |
B2B-specific features (per-client pricing grids, quick order by SKU, hierarchical approval) account for most of the gap versus a classic e-commerce site.
B2B SaaS vs custom-built
This choice commits the next 5 years. Here are the decision criteria.
| Criterion | B2B SaaS | Custom-built |
|---|---|---|
| Initial cost | 17,000 - 45,000 USD | 45,000 - 78,000 USD |
| Monthly subscription | 550 - 2,200 USD | 0 (own licence) |
| Time to launch | 2 - 4 months | 4 - 8 months |
| Complex pricing rules | Limited | Unlimited |
| Deep ERP integration | Medium | Full |
| Technical independence | Low | High |
Rule: under 500 client accounts with standard pricing, B2B SaaS is enough. Beyond that, or with credit lines and complex workflows, custom-built becomes worthwhile.
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Mini case study
Pierre, sales director at an industrial supplies distributor in Miami, serves 320 professional clients. Custom platform with ERP integration: 64,000 USD. Maintenance: 2,000 USD/month, or 24,000 USD/year. First-year cost: about 88,000 USD.
Goal: shift 30% of orders online. On 4,200 orders/year at a 480 USD basket, that is 1,260 digitized orders. Each online order saves 12 minutes of sales entry, or 252 h/year at 44 USD: 11,088 USD. Added to the 8% average-basket lift seen in B2B self-service (48,000 USD of extra margin), the platform pays back in about 14 months.
FAQ
Can I show different prices per client? Yes, that is the core of B2B: per-account pricing grids, volume discounts and contract rates apply automatically on login.
Is ERP integration essential? Strongly recommended: it syncs stock, prices and credit in real time. Budget 9,000 to 28,000 USD depending on the ERP.
What is the launch timeline? 4 to 8 months for custom, 2 to 4 months for a configured B2B SaaS. Catalog migration is often the longest task.
What maintenance budget? 900 to 2,800 USD/month depending on traffic and the number of integrations to monitor.
Does self-service raise the basket? Yes, by roughly 5 to 10% on average, because clients order after hours and discover more SKUs.
Let's scope your project. Share your account count, your ERP and your pricing rules, and we will settle SaaS versus custom. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.
