You know when you trade in games they only give you a discount on pre-owned games right?
If you want the cash, they will give you about $20 less than they should.
My friend bought Battlestations: Midway 2 days ago, and he is now going to trade it in for GRAW 2. I think he is a retard but whatever floats his battleship (Crappy Battlestations reference). He will get a real crappy discount and then will complain to me that he got ripped off.
If I was you, I would either get enough cash to buy GRAW 2 outright, or sell the games to a friend. I know that I can sell my games to a friend for twice as much as EB/GS would give me and my friends are really all that mentally challanged.
When I was thinking about trading in my PS2 & games to GS last week, I was searching the internet for some trade in values when I came across this:
The Mad Gamer #4: EB Games EXPOSED! » PopCultureShock
Read the entire article, seriously. Even if you arent trading them in, read it. It didnt surprise me, but it may you.