How much money do you think i will get by trading in these games to Gamestop?

How much money do you think i will get by trading in these games to Gamestop. Gears od War 3, Dead Island, Call of Duty 4, Call of Duty World at War, Saints Row 2, and Oblivion (Game of the Year Edition including all DLC)How much money do you think i will get by trading in these games to Gamestop?
About enough to buy a new game for 59.99. I really don't like that place. They low-ball you and resell the game 5 dollar cheaper than full price and kept your DLC.How much money do you think i will get by trading in these games to Gamestop?
Oblivion will fetch you 5 or 7 dollars

Saints Row like 10

CoD4 5 bucks

CoDWAW like 10

Dead island like 15

Gears like 20

the game of life online

harcourt math