Not much!
It would depend on where you are trading the games and what condition they are in. Game retailers rarely give a good price on second-hand games unless they are hard to come by.
$99.97
Assassins grossed $83,306,268 worldwide.
Maybe less than $20
Don't do it you will get $15.00 back
Assassins grossed $30,306,268 in the domestic market.
Roughly $25
$50
$100 more or less
4
probably £5, £10 at the most.