Telerik OpenAccess ORM provides three kind of licenses:
- Trial: for evaluation purposes
- Express: for free usage with free databases, see details here
- Developer: commercial license with support for all databases
Please be more specific where you read different terms by sending an email to firstname.lastname@example.org
Concerning your use of the Express version you can basically build commercial applications, but they may only run with free databases as we support them.
If you want to use a commercial database you would need a developer license.
Hope this clarifies our licensing.
the Telerik team