i've never done a lowball. i dont have enough stuff to have one that people would respond to. you have new stuff on a regular basis. if you'd rather have cash, i think you'd do well. i'd support you. on the other hand, you have great prices all the time, so really it depends on how bad you need the cash (since 1 or 2 items may get way lower bids than you expected).
i know the 3ds has no games, that's why i want more, lol. can't wait til CAG gets flooded with them, so i can make some trades instead of buying every new title the second it's released.