Don't think that there's a good heroine in USA.
Someone that is a relative of a person I know is getting lots of money sending by mail H to the USA. He has a few clients, no more than 20 but some of them are resellers.
And he sends the best quality foundable in Spain, but he gets almost twice the spanish price for it and even with that, his customers are really happy because they say that what they can buy in their cities is twice the high price and less than half of quality: four times worse.
As far as I know of that business there is no smokable heroine in the USA, but the HCl salt, the white heroin from the Asian route, and he sends the base form that comes from Afghanistan and Turkey, which can be used every way -snort, smoke, eat, inject and anal- with great success as seen.
Besides that, heroine users are not naive drug users mostly heavy and long term users, so I can guess that they don't pay high prices for anything and with that busines that at least (as far as I know) it has been working for more than 2 years I think that USA heroine quality is really poor and unfair priced.
Seattle is just one of the cities he send, and I know it for one commment he said few months ago:
"Maybe I'm suppling the dope for the friends of Kurt Cobain in Seattle!!"
But I really think it's all the same in that country.