Man they say in NJ and NYC it's like 65-75% for bags and 80% or so for "raw" and thats likely true since it is the heroin spot at the moment for Colombian dope, The whole NJ,NYC,New England area has better dope on avg, than most places and cheaper,,thats a true but broad fact, some places get dope that 40-50% pure powder and it's all they have ever done, and when they do some that's 60% for example thats like 25-30+% more dope than the 40-50% shit, so it would be "fire" compared to the regualr shit..anyway, purity varys by dealers , by location, city, town, suburb, what type of dope you get, West coast= Mexcian dope, East Coast=Colombian dope, in between some of both, depends, I imagine the dope in Detroit is better than 25% pure, I have heard that it is better from actual seizure info I saw online which can be misleading on purity, becasue they always end up with a bag of fake 0% pure not dope, they count as 0% and then they get all purity levels between XX% and XX+% and avg, them out, so taking in account for the 0% bunk dope they count as heroin,which is bullshit, if it's 0% it has no heroin and is fake dope,so it should not avg in IMO, 5% or 10% yes, becasue their is actually dope in it, but not fake dope..lol.. If you take 10 samples and most are 60% and a few are 80% and one is 0% that lowers the overall purity alot on avg. purity shit the DEA puts out and all cops, do not count fake dope in there I say, count the purity of collected bags of users that got busted and sample the purity of every bag, over a year, and I bet ,if no fake 0% shit is taken into account it is higher than the DEA stats say...although, who the fuck knows the exact purity without some huge expensive lab, testing eqipment? Even the people that make it test it , but after it leaves the production site or test area, who knows what fool might add 1-2% to 100 kg..thats an extra 1-2 kg on 1-2% cut with that much dope!!! Think about how many hands it goes through, and how many pass it as is(which does happen) and how many weasals add a little 5% cut to fatten their wallet or to replace a few grams of more of dope they stole to use themselves,rarely happens in big time dealers, they know better than to use dope, they see its bad side all day every day clocking to users!! Think about it..lol..If you saw the biggest low lifes in your area trying to talk their way outta some dope for less, or trade some bullshit they stole worth $200 for a bag or 2 or so, plus all the functioning users,hard core junkies who still maintin as best they can, and rich people with money to spare all in the same day, day after day,week after week,.etc..Would you want to use something that turned some of the weakest of us out there into thieving homeless no good junkies?? No offense to anyone who has lived that way, I have seen plenty of good people and freinds and family end up in the gutter over dope or drugs of different kinds...I almost ended up on the streets myself , almost...had to check my head and get outta the way I was living and using or I would not be here today!