I traded my DS in for a DSi and they made me pay $100 more for it so they give you about $70 for a DS and you only have to pay $100 plus tax.
GameStop
it cost about 99.99
The DS/DSi trade-in offer has expired. You can always try checking GameStop's website (below) or your local GameStop.
Yes you can trade a DSi for a DS Lite at Gamestop.
about $60 or alittle less
gamestop has a pack of 4 for 10.00
Some shops allow part trading, however, the Nintendo DSi does not need Nintendo DS parts. Gamestop is currently offering the trading of the DSL for the DSi. If you trade in your DSL then you can get $70 towards the DSi (which is currently priced at $170). :) Yes that is right but the deal is no loger avaible!!!
Gamestop
Yes, they do.
gamestop.
Ebay, or Gamestop
You can Trade a DSI in at Gamestop, they will give you credits for your DSI to buy something else, such as a 3DS.