Thanks, I missed this. I had a few people asking if I wanted to run the enduro in my car and didn't know what to ask.
What I used to do was:
They pay the entry fee, plus for tires (usually half a set's worth) plus a bit for wear. This was for a "friendly" style deal.
Then they HAD to sign a sheet of paper acknowledging what the car was worth if they wadded it up, and that they would buy it or fix it to my satisfaction.
I put a price of $450 out there, includes everything, I guess I'm on the cheap cheap side? lol Although this car isn't proven or anything so...
As someone that owned an endure team for years. It's not about proven, it's about making sure you don't lose money so you can go and run the car.
My 25 hour list which was bare bones: clutch, pads, roots, hubs, diff rebuild, tranny rebuild, water pump, fuel pump, gaskets, hoses and belts, Cat back (SM mufflers burn out) plus entry and tire costs.
Ecr is far less time, but it's still wear on your car. Anything that spins wears out...
Regardless, go, and have fun. Get a driver coach and split the time with them, pay the fees yourself.