This event is fairly typical of this sort of club school. The costs are fairly average. I don't know if there are slots available at this event or not this late. It is best to plan a few months in advance, prep your car and be 100% ready for it (OK I don't always follow my own advice).

This is the web site for this event (this group has 2 more events this year). Check them out at http://mazdadrivers.com/. You will find, rules, a pretty normal tech form, and typical expenses.