Considering getting into CCA racing.

Asside from the cost of the car and any prep costs, what is the annual, recurring costs to campaign a car? ( I know that this is dependent upon the resources of the driver and number of events per year. I'm looking for an order of magnitude guestimate, $2k, $5k or $15k?)

I'm assuming that there is the cost of:
Tires
Entry fees
Fuel
Room/food per weekend
Etc.

Any help is appreciated,
Ian