I have noticed that as well,I dont get weed for dirt cheap either,The cheapest I ever gotten weed was when I was in Tonga.They dont even ask you for money,people would exchange stuff like lobsters or some fish and get like a Bag of weed.....no weighing or anything it was like "Is this enough?" There was no set price.My Best freinds bro used to just give weed to people if they wanted.But I remember hoeing weeds in my freinds dads farm and he gave us a sandwich bag full of buds.
But I agree,$50 bucks an eighth is what pay here as well.