Ray, the offroad track here (CRCRC) did something recently that I thought was BRILLIANT. They had "New Racer Packs" that they gave out with the purchase of any kit. Included in the pack was:
1. Info about the track (times, fees, directions)
2. FAQ about what racing is about and what to bring
3. Coupons for 2 free race fees and 1 free practice session.
I thought it was a brilliant idea and it's a great value-add to the price of a kit.