We have gone for 2 years now and done all four Fri and Sat crops. The Fri one is much more crowded and rowdy. Contests, give aways, stuff like that. Sat is much calmer and quieter. I get stuff done at the crops, so we'll probably go again.
The group rate seems pretty cheap to me. $107 for the night. I split it with my MIL so it is really reasonable. I guess, if I drove home, that would be free, but that defeats the "Mommy is currently unavailable for refereeing any squabbles, arguments or discussions" concept I have that weekend!