The verdict in three sentences
Syncing your CRM (HubSpot, Salesforce) with your ERP costs USD 8,000 to 20,000 for a simple connector, and USD 20,000 to 45,000 for a bidirectional real-time integration. The price depends less on data volume than on the direction of sync and the number of objects to map. Expect 4 to 10 weeks to build and USD 200 to 650/month for maintenance and monitoring.
The three integration types and their costs
Not all integrations are equal. A daily batch costs a fraction of real-time bidirectional. Here are the 2026 orders of magnitude.
| Integration type | How it works | 2026 cost (USD) | Timeline |
|---|---|---|---|
| One-way batch | Scheduled nightly export | 8,000 - 16,000 | 3-5 wk |
| One-way real-time | Webhooks on creation | 12,000 - 26,000 | 4-7 wk |
| Bidirectional | Two-way sync | 20,000 - 45,000 | 6-10 wk |
| Multi-tool middleware | Central hub (3+ systems) | 32,000 - 75,000 | 8-14 wk |
A bidirectional integration is far pricier because it must handle conflicts: what happens if a contact is edited on both sides at once? This resolution logic represents 30 to 40 % of the effort.
What moves the quote
Beyond type, five factors shift the dial. This table helps you estimate your case.
| Factor | Price impact | Example |
|---|---|---|
| Number of synced objects | +USD 2,500/object | Contacts + deals + invoices |
| Source API quality | +/- 30 % | Modern REST vs legacy SOAP |
| Complex mapping rules | +USD 4,000 - 10,000 | Computed fields, conditions |
| Error handling and logs | +USD 2,500 - 6,000 | Auto-retry, alerts |
| Volume (> 100k records) | +USD 2,500 - 8,000 | Pagination, rate limits |
A connector "at USD 8,000" sold too fast often hides missing error handling: that is the line item that loses data in production.
Mini case study
Julien, sales director of a trading SME in Bordeaux, wants to sync HubSpot (marketing/sales) and his ERP (orders/invoices). Objects: contacts, deals, invoices, bidirectional.
Quote: USD 37,000, delivered in 8 weeks, maintenance USD 420/month. Before, his reps re-keyed each order into two tools: 12 min x 40 orders/day = 8 hours/day lost across the team. At USD 40/h loaded, automation saves USD 7,040/month, paying back the connector in under 5 months.
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FAQ
Is the CRM's native connector enough?
Sometimes, for simple standard cases, free or USD 20-120/month. But as soon as you have specific fields or business logic, a custom connector (USD 8,000-45,000) becomes essential.
How much does integration maintenance cost?
Between USD 200 and 650/month in 2026: monitoring, error recovery, adapting to API updates. Vendors regularly break their APIs, so you must keep up.
Batch or real-time: which to choose?
Batch (USD 8,000-16,000) is enough if a few-hour lag is tolerable. Real-time (from USD 12,000) is needed for customer service or stock, where freshness is critical.
How long to deliver a bidirectional integration?
Between 6 and 10 weeks in 2026, scoping and testing included. Sync-conflict handling adds 1 to 2 weeks but prevents duplicates and data loss.
What if the source API changes?
It will change: that is why maintenance exists. A well-built connector isolates the mapping logic, limiting an API change to a few hours of adaptation.
Let's scope your project. Tell us your two tools, the objects to sync and the direction (one-way or bidirectional), and we will quote the connector and its 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.
