Why not tell the clients that you'll provide "the services" after doing an inspection? If the inspection is not passed successfully, you could revert back to a less expensive and basic experience. Seems like a good solution for both sides.
There’s no ‘basic experience’, my rates are my rates. Even you just want to go for a walk in the park (which happens more than you think)or spend time at my Incall. The way I personally run my business works out well for me, but it’s not for everyone. There’s no model where you are all things for all people, I don’t try to be. I’m just sharing my experience and perspective.

