Does it ever put you off buying K if you ask about the K (basic questions e.g washing/cooking, what kind of shards etc) and the vendor says they don't do it so don't know much about the K?
I think they should know their product but then again fair play for telling the truth and not coming up with some hype bullshit.
I view it kind of like how a lot of weed dealers don't know what strain the weed they're selling is. I prefer them to be honest and say they don't know rather than make up some bogus story