I just received the Gettin' Crafty quest, and because I already had a few of the target items in my possession, it is treating it as if I had crafted them, which I hadn't. I'd bought them ages ago.
I don't think they should count, as the quest is to craft them, not acquire them.
UPDATE: Oops. It's just offering to let me sell them to satisfy that part of the quest. That's fair and fine. I repeat- oops.