What part of Cali you talking? Border? If youre near Mexico then we're practically neighbors. 2g's of Trainwreck for $15.00 sounds like a first time hook-up unless your friend grows it or is good friends with the dealer.
I pay roughly 10 a gram for Train wreck. As far as your experience goes...2 grams should have gotten you messed up. You probably did it wrong. So where abouts in Cali are you?