how much is trade in for a nintendo ds?

Answer 1

check out blockbuster game rush

http://www.gamerush.com/

Answer 2

I would say $90 to 100 used. Since they are roughly $120- 150 in stores. But also consider that the DS lite is out, so that may drop the price of the original.
To sell it, I would not recommend goin through Game Stop since I heard there return value is much less. You may want to give Ebay a shot if you can. As long as it is good condition and put it up for a recinable price, you shouldn't have a problem.

Answer 3

110$ at eb games that cheap but its used