How much could I probably sell these for?

if you go to gamestop or EBGames, you might be able to sell your DS towards the purchase of a 3DS and get extra monies :p the car charger will sell seperately and prob not get too much. a good way of seeing how much a game will sell for is looking on gamestop.com for the used version of each game and you game should sell for about 40-50% of that price.