We've never heard of them but we don't have a high-end coach and we do not know of anybody who owns a luxury coach either. That place specializes in high-end luxury coaches so I would imagine that their prices will be very high.
One place we have heard good things about from friends and when we are staying in the Houston area is RV Masters. I'm not sure if you can get the coach to Houston or if RV Masters will come to New Braunfels for a fee. You'd have to ask them. I would think they may for a fee.
Here's their webpage pertaining to their pre-purchase inspections: --click here
I just looked them up on RV Service Reviews and they have excellent reviews except for one. --click here