Here in SoCal I pay 100 a quarter, 110 MAX and it better be some really really good stuff. Its hard to tell what a quarter will look like because it could be dense nugs or small light nugs. I would suggest you buy a small scale so that you can weigh your nug and not get ripped off. Trust on that because I didn't have one for months and when i did get one i found out a lot of people like to rip you off. I'd be 1-5g short when i picked up oz's or they would give me .8 and say it was a gram. Mind you, that was back in high school before I had a card and had to deal with sketchy people all the time. If your getting it from a clinic you should be fine, but it sounds like your getting it on the streets where anything goes.