Direct answer
There's a wide range, not one number: the cheapest path costs nothing beyond your existing CRM subscription (native workflow builders like HubSpot's or Pipedrive's), a one-time custom sync/workflow build sits in the middle, and an ongoing AI-driven qualification layer (comparable in shape to AI Sales Manager at €490/mo) is the most involved tier, priced separately from a one-time build. A Revenue Audit tells you which tier actually applies to your setup.
The cheapest version: native CRM workflows
If your CRM's own workflow builder (HubSpot, Pipedrive) covers the rule you need, that's the cheapest path — configuration, not development. See HubSpot Workflows vs Custom AI Automation for exactly where that line sits.
Where cost increases: custom logic and multi-system sync
Cost rises when the rule needs judgment (is this lead qualified) rather than a fixed trigger, or when data needs to sync across more than one system — see Integrations for the specific platforms this usually involves.
One-time build vs. ongoing cost
Initial setup is typically a one-time cost; if an AI layer is doing ongoing qualification (not just data sync), that's an ongoing service — see AI Sales Manager pricing for what a comparable ongoing service looks like.
How to get a real number
A Revenue Audit reviews your current CRM setup and tells you which tier of cost actually applies — native workflow, one-time custom build, or ongoing AI layer. If the honest answer is that your process doesn't fit a standard CRM at all, not just that it's missing an automation, see Custom CRM Development instead.
Questions
Is native CRM automation always cheaper?+
For simple fixed rules, yes. For judgment-based qualification, an external layer usually ends up cheaper than forcing complex logic into native workflow builders.
Does this include the CRM subscription itself?+
No — this is about the automation/integration work, not the CRM platform's own subscription cost.
Is there a monthly fee for CRM automation specifically?+
Only if it involves ongoing AI-driven logic (like AI Sales Manager) — a one-time sync/workflow build is typically a one-time cost.
What's an "AI CRM agent" — is that a different product?+
Not a separate product from what's described here — it usually refers to the same thing as an ongoing AI-driven qualification layer (comparable to AI Sales Manager) writing structured data into your CRM, rather than a one-time sync.