Typically if you ask how many times your blow has been cut out here, or even question the quality, dealers here will get pissed and tell you to fuck off. But generally, if you're buying blow, you get a teaser to see what it's like. There's a lot of etiquette you got to follow when buying shit :/ That's why I've been trying to avoid buying coke much. In related news, I freebased coke for my first time the other day. Tasted like shit, didn't really get me high. Not worth the effort.