This is a common question.
Customers want to utilize Windows Autopilot but think that using it might mean additional costs over what they are already paying in licensing for Microsoft Intune. The confusion tends to come from using an OEM service to auto-provision purchased devices.
If you have Azure AD Premium and Intune per-user licenses, you’re set. Microsoft doesn’t charge any more for Autopilot – its part of the package.
However, if you use an OEM to register your devices with your tenant or for clean images, the OEM may charge an additional fee. Check with your chosen OEM to determine their setup fee.