The verdict in three sentences
Connecting a B2B webshop to Sage X3 or a comparable mid-market ERP (Cegid, NetSuite, Business Central) costs 8,000 to 20,000 EUR with a standard connector and 20,000 to 45,000 EUR custom-built (roughly 9,000 to 50,000 USD overall), over 6 to 10 weeks. A standard connector is enough if your pricing is simple and stock sits in one site. Once you handle customer-specific pricing, multi-site stock and invoices pushed to the customer portal, custom becomes the only reliable option.
Standard or custom: the 2026 budget
| Data flow | Standard connector | Custom connector |
|---|---|---|
| Items and product data | included | included, with specific attributes |
| Stock | one site, every 15 to 60 minutes | multi-site, near real time |
| Prices | list price and a few discounts | customer pricing, family discounts, negotiated net prices |
| Web orders into the ERP | included | included, with credit checks |
| Invoices and credit notes to the customer portal | rarely | included (PDF and payment status) |
| Delivery tracking | no | yes, carrier tracking numbers |
| 2026 budget (excl. VAT) | 8,000 to 20,000 EUR | 20,000 to 45,000 EUR |
| Annual maintenance | 1,500 to 4,000 EUR | 3,000 to 8,000 EUR |
Standard connectors often run through middleware or an iPaaS billed at 150 to 600 EUR a month. Custom connectors rely on Sage X3 web services (SOAP or REST API depending on version) or the other ERP's API, with a message queue that replays exchanges after an outage.
A typical 6 to 10 week plan
| Stage | Duration | Deliverable |
|---|---|---|
| ERP data and pricing rules audit | 1 to 2 weeks | Map of flows, fields, frequencies |
| Specifications and architecture choice | 1 week | Document signed off by IT and business |
| Build items, stock, pricing flows | 2 to 3 weeks | Sync running on test environment |
| Build orders, invoices, deliveries | 1 to 2 weeks | Web orders created in the ERP |
| Acceptance with 20 to 50 real orders | 1 to 2 weeks | Acceptance report |
| Go-live and monitoring | a few days | Error dashboard, alerts |
The main overrun risk is data quality: items without weights, duplicate price lists or customers attached to the wrong price list can add 2 to 3 weeks.
What you gain
A web order re-keyed into Sage X3 takes an order-desk assistant 3 to 5 minutes, with a 2 to 4% error rate (SKU, quantity, delivery address). Each error costs a return, a credit note and an annoyed customer, often 40 to 80 EUR all in. The connection removes re-keying and shows customers real stock and their real price, which also cuts inbound calls.
Mini case study
Julien, IT manager at a hardware components manufacturer, receives 18,000 web orders a year re-keyed into Sage X3. At 4 minutes per order, that is 1,200 hours, about 42,000 EUR at a loaded rate of 35 EUR an hour. With 3% errors at 60 EUR each, add 32,400 EUR. Total: 74,400 EUR a year. A custom connector at 35,000 EUR, plus 5,000 EUR of annual maintenance, pays back in about 6 months.
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FAQ
Does Sage X3 have a usable API?
Yes, Sage X3 exposes web services and, on recent versions, a REST API. The Sage partner usually needs 2 to 5 days of X3 configuration to expose the right objects.
Are other ERPs easier to connect?
Cegid, NetSuite and Business Central offer documented APIs, but the effort depends mainly on your pricing rules. Budgets stay in the same range, 8,000 to 45,000 EUR.
How often should stock sync?
For a distributor, every 5 to 15 minutes is enough in most cases. Real time only matters for fast-moving, low-stock items.
What if the ERP is down?
A message queue keeps orders and replays them when the ERP returns. Set alerts if an order stays blocked more than 30 minutes.
Do we need a new webshop to connect the ERP?
Rarely. Most B2B platforms accept a connector; the key is checking they handle customer pricing without technical limits.
Let's scope your project. Tell us your ERP, version and the flows to sync: we will estimate the connector, the 6 to 10 week plan and maintenance. 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.