None--they're trying to run a business. They're not going to be able to resell a broken system.
While you can't trade an older system for a newer one, you can certainly trade a DS/DS Lite in for credit at GameStop or stores like it.
GameStop
Yes, and they'll give you some type of credit to buy another game.
No, but you could for money or store credit.For instance, Gamestop would give you money/ store credit if you traded it in.
EB Games or Gamestop.
No
Gamestop is a place where you can trade in games and consoles for store credit
If you have a GameStop or and EB Games near by you can take your Nintendo DS and get store trade in credit for your DS and use it towards the purchase of the 3DS. Now I'm not sure where you live but I know that the 3DS is around $249.99 and the trade in value for a DSi is less then half of that. And Gamestop and EB Games are only taking pre orders for the 3DS, it hasn't been released yet.
Yes but they will deduct a certain amount of trade in credit as a refurb fee
yes but i not sure how
The DS/DSi trade-in offer has expired. You can always try checking GameStop's website (below) or your local GameStop.
Yes and you can get a discount for the Nintendo ds i but only if you have the serial number on the back or no hope for you.