I've been wanting to try crossfit for a while now and am going to attend a free intro workout tomorrow. Primary reason I haven't tried it yet, beside the fact that I know it will kill me physically (I'm not in horrible shape but not in great shape either) is that it is expensive. The 2 times per week plan is doable. The 3 times per week plan would be likely over the edge, cost-wise for me. I could do it, but...

How often to do you guys go?