That drove me CRAZY when I first got to the stage where you buy something other than basic ovens. I still very much agree that they shouldn't bother with one recipe-appliances (especially when it's so easy to think of more, I mean you managed 3 kinds of hot chocolate in RS, so put the mint and cinnamon kinds on bakery's cocoa maker, for Pete's sake!) but really, it's still 2 gems you wouldn't otherwise get, and 10000 coins is so easy to make back. (well, depending on your level).