Vetting for up to three services, three business types, and five verticals is included in your annual platform fee.
If you would like to be vetted for another service, that is available as an upgrade. The cost is $149 to be vetted and approved for receiving those types of projects as well.
You can apply for additional vetting here - https://platform.getcredo.com/additional-skills-vetting/
Please note: it is not allowed to drop one service and be approved for another for free. If you would like to be vetted for a new service, this is only available for a fee.