Woah dude. Hahahah. I pay 20$ a gram. It's always really bomb shit. Sometimes I pay less but it's almost ALWAYS 20 a G. I smoke everything I get. I even smoke the stem. But trainwreck is basic 15 or 20 a G stuff. Anyways just buy a gram or two and smoke a little multiple times until you get high. Then you can start smoking however much you want.