[Kami]

We do have the occasional policeperson who is not a Mod rather spoiling the mood with open-thread and somewhat unfounded accusations. But, generally, it's okay if you buy; you can be prodded a bit if you try to point out price information on open threads, or if selling and that's your only contrinbution to the forum, or indeed if you (try to) sell in a way that is different from the Police-not-Mod's version of "normal".