It depends what you want for your GBA.
You call them or go there
UNFORTUNATELY you wouldn't get much because the games are cheap to buy and its a gba [ have better consoles now]
Around $3.
gamestop
gamestop or online
It depend if it is gamestop they will give 30 % of regular price
Gamestop in Machesney Park, IL
Go to a gamestop to find out
what you want to do first is get a power up card then sell your games if really good $5-$15 or $5 and under the card will give you points for you to get some awesome stuff.
75.00
$1.