How 'cheap' are we talking here?

'Cos I've got a slightly messed-up DS which I might consider getting rid of.

I don't know,$40 or less.When you say "slightly messed-up",how is it?(like,is it an internal problem,like it does not power on,or an external problem,like a broken hinge?)

It has a little chip out of the L button, and for some reason the stylus re-calibration won't work, so you have to tap slightly to the right of whatever it is you want to tap on. You get used to it after a while, though.

PM me if you're interested.