How Much Do These Games Cost at Gamestop, Do they open tomorrow?

If you don't know, tomorrow is memorial day. I thought that all of the stores are closed but I have't been out on memorial days so I don't know. DOes anyone know if gamestop is open memorial day? Also to the other topic, I really, really, really, really times infinity want BC2 (battle company 2 if someone doesn't know... WHO DOESN'T). So I have an edge card, and I checked some of the discounts online, but I am really bad at math, so they could cheat me out of money and I wouldn't even notice. ( Check the website to do the math with the discounts plus edge card). I am trading Army of Two, Borderlands, Lost Planet Colonies, Lost Planet, Gears of War 2, and AvP (the newest one), and unreal tournament. I estimate LPC and LP should be about 10-14, AvP about 13-15 (don't forget to correct me if i'm wrong, really, correct me), Ao2 about 9-12 bucks, UT3 to be about 7-10 bucks, and borderlands 15-18 bucks. Now estimating the prices down to a similar value. Making them a familiar number, 10$. The total cost by rounded number, to be 60 bucks, which is enough I am guessing, problem is that is my math wrong? are they lesser cost? With the edge card 10 percent bonus, that should be an extra 3 or 5 dollars. So if anyone has a clue what I just said, and can help, thanks!