I assume it is modded rather than you trying it on with credit card chargebacks. Modded switches are quite desirable it seems these days (basic mods with current versions/udpates are hard to do, chips are expensive, newer models not doing so much either), and while many would probably prefer you pinky promise that you never did anything that would risk online (personally I roll with if you hack you lose online, anything you get between the hack and the ban is just a bonus. Some however seem to think if they say enough magic spells that they will stay online until the service dies which is... fantasy.) then eh.
Is online really that valuable for you? Paying (ew) for p2p (double ew) to have someone communicate in various ways how good a lay my mother is (meh) seems a pretty worthless bit of functionality.
Of course if you can't see past that and want to sell it to me for $50 for spares and repairs I will happily take it off your hands.