The verdict in three sentences
A standard connector to Sage, SAP Business One or HubSpot is budgeted at 6,000 to 15,000 EUR; a custom API integration rises to 15,000 to 40,000 EUR depending on the number of synchronised objects. An iPaaS middleware adds 200 to 900 EUR/month but drastically reduces maintenance. Plan 4 to 10 weeks of project work and a 50 % cut in data-entry time, provided you budget the hidden costs: mapping, error handling and monitoring.
Integration scenarios and their 2026 prices
Not all integrations are equal. The price depends on the connector type, the direction of synchronisation and the volume of objects.
| Scenario | Scope | 2026 price (EUR) |
|---|---|---|
| Prebuilt standard connector | 1-2 objects, one way | 6,000 - 10,000 |
| Bidirectional standard connector | Customers + invoices, two ways | 10,000 - 15,000 |
| Custom API integration | 4+ objects, business rules | 15,000 - 40,000 |
| Real-time sync (webhooks) | Event-driven, low latency | +20 to 35 % |
| Batch sync (overnight) | Scheduled jobs | standard base |
| Managed iPaaS (subscription) | Make, Zapier, n8n, Workato | 200 - 900 EUR/month |
Real-time sync costs more than batch but avoids inconsistencies when your sales and accounting teams work on the same records during the day.
The hidden costs that blow the budget
The classic mistake is to budget only the "pipe". Yet most of the work is elsewhere: matching fields, handling errors and monitoring the sync.
| Hidden cost | Why | 2026 order of magnitude |
|---|---|---|
| Field mapping | Aligning two data models | 1,500 - 5,000 EUR |
| Error handling / recovery | Duplicates, failures, retries | 2,000 - 6,000 EUR |
| Monitoring + alerts | Detecting a broken sync | 1,000 - 3,000 EUR |
| Test environment | ERP/CRM sandbox | 500 - 2,000 EUR |
| Maintenance (API changes) | HubSpot/SAP change their APIs | 150 - 500 EUR/month |
These items often represent 30 to 40 % of the total budget. Ignoring them guarantees a sync that fails without anyone noticing.
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Mini case study
Celine, IT director of a distribution SME, wants to connect her new web customer portal to Sage to eliminate double order entry. Scope: bidirectional sync of customers + orders + invoices, real-time, mapping and error handling included. Quote: 19,500 EUR over 7 weeks, plus an iPaaS at 350 EUR/month. Previously, two people re-keyed 60 orders/day, about 3 hours of daily work. The connector removes 50 to 60 % of that load, roughly 1.7 h/day, about 6 hours saved per week and nearly 12,000 EUR/year of agent time redeployed to customer service.
FAQ
Standard or custom connector? If your need matches a prebuilt connector (Sage to classic e-commerce), go for 6,000-15,000 EUR. Specific business rules or 4+ objects to sync justify custom at 15,000-40,000 EUR.
Is an iPaaS cheaper? In the short term yes: Make or n8n enable flows at 200-900 EUR/month without heavy development. At high volumes or complex logic, custom becomes cheaper over 2-3 years.
Real-time or overnight batch? Batch is enough for accounting (200 EUR less). Real-time is essential when several teams edit the same data during the day; expect a 20 to 35 % premium.
What happens when HubSpot or SAP changes its API? Vendors update their APIs 1 to 2 times a year. A maintenance contract at 150-500 EUR/month covers those adaptations and prevents sync breakdowns.
How long for a first working sync? A standard connector is operational in 4 to 6 weeks; a full custom integration needs 7 to 10 weeks including tests.
Let's scope your project. Tell us your software (ERP, CRM), the objects to synchronise and the mode you want (real-time or batch), and we will price the connector and its operation. 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.
