The verdict in three sentences
Stock discrepancies between your site and ERP come from a manual or too-slow batch sync: the site sells what the ERP no longer has. A real-time (or near-real-time) integration runs CAD 12,000 to 45,000 in 2026 depending on synced flows and error handling. Payback is fast: every oversell avoided saves a cancellation, a refund and an unhappy customer.
Integration line items
| Line item | Scope | Order of magnitude (CAD) |
|---|---|---|
| Discovery & flow mapping | Products, prices, stock, orders | 2,000 - 5,500 |
| Real-time stock connector | Two-way availability sync | 4,000 - 14,000 |
| Price & product sync | ERP to site | 3,000 - 8,000 |
| Order & customer sync | Site to ERP | 3,000 - 10,000 |
| Error handling & logs | Retry, alerts, reconciliation | 2,000 - 7,000 |
| Testing & cutover | Tests, go-live | 1,500 - 4,000 |
Real-time vs batch, iPaaS vs custom
| Approach | Indicative cost (CAD) | Stock freshness | When to choose |
|---|---|---|---|
| Nightly batch | 6,000 - 14,000 | 24 h | Low turnover |
| Near-real-time (15-30 min) | 12,000 - 26,000 | 15-30 min | Medium turnover |
| Real-time (webhooks) | 22,000 - 45,000 | < 1 min | High turnover, critical oversell |
| iPaaS (Make, Zapier, ...) | 4,500 - 18,000 + sub | Variable | Simple, standard flows |
| Custom connector | 12,000 - 45,000 | As needed | Specific flows, high volume |
iPaaS is fast to set up for standard flows; custom wins once rules (multi-warehouse, reservations, units) fall outside the box or volume makes iPaaS subscriptions costly.
Mini case study
Sarah, who runs an ecommerce SME in Toronto, gets one oversell per 40 orders with a 24-hour batch sync. On 1,500 orders/month, that is 37 oversells/month, each costing on average CAD 40 (refund, fees, support time), i.e. CAD 1,480/month or CAD 17,800/year. A near-real-time integration at CAD 24,000 brings oversells to near zero; payback is around 16 months, before the gain in customer satisfaction and reviews.
FAQ
Why do I have stock discrepancies between my site and ERP?
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Because the sync is manual or on too-infrequent a batch: between updates, the site sells stock the ERP has already sold elsewhere.
How much does an ecommerce/ERP integration cost in 2026?
Between CAD 12,000 and 45,000 depending on flows (stock, prices, orders), desired freshness and error handling.
Real-time or batch: which to choose?
Batch for low turnover, near-real-time for medium turnover, real-time via webhooks once oversell is critical or volume is high.
iPaaS or custom connector?
iPaaS for simple, standard flows; custom once rules (multi-warehouse, reservations, units) are specific or volume makes the iPaaS subscription too costly.
What is the setup timeline?
Between 3 and 8 weeks depending on the number of flows, mapping complexity and error handling and reconciliation.
Let's scope your project. Describe your ecommerce, your ERP and your volumes, and we'll cost the integration and the right stock freshness. 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.
