With
The Drivers Edge it is $315 for the weekend with an instructor. Once you graduate to solo (without a assigned instructor) your price goes down to $295. The next TWS event with them is in September 28-29 and they sell out very quickly.
You can piece yourself together a
pretty good oil cooler setup for under $300 or just by a whole kit from
Z1 for a little more. Make sure you get one with a thermostatic oil sandwich plate adapter.