I'm selling a few games at Gamestop (or Gamedude, if they give more money). List:
Mirror's Edge PC (great condition, box is a little messed up)
Enemy Territory: Quake Wars LIMITED COLLECTOR'S EDITION (perfect condition; the disc has never been run, and all the extra collector's stuff is in perfect condition)
Sims 2: Open For Business expansion pack (great condition)
Civilization 3 COMPLETE (fantastic condition)
How much money will I approximately get from these?
Sims 2 is worthless. I'm sorry, but there are more copies of these to deal with all the fangirlism then there are burgers in most American fast food outlets.
Civilization is more classic than the sims, and if the condition is as good as you say, you could get some for it.
Mirror's Edge is a modern game, which ought to be a plus. (ID about you, but we have EB Games in my country, and if a box is too messed up, they just get rid of it and put secondhand CD's in DVD cases, thus eliminating the condition issue.
Quake Wars is probably less than you think. The game did well, but it's old, so noone is looking to buy the Collector's Ed. any more.
In short, i'd sell the Sims, Civ, and Mirror's Edge to them, and try that Collector's Ed. on eBay, as that would be where people would look for that sort of thing.
Good luck.
