It's probably not a good idea to rip off a bot.

I could care less about ripping the bot off, but it could be "manipulating" the economy, which is against Blizzard policy; they have nothing against charging a lot for things, but not sure where that crosses the line.

For a more specific idea of where the guys are in BB, google for "warcraft +neutral +auction". The article lists four neutral auctioneers, and I did indeed find four.