I check in at the site now and then to see where I am in line and if it's worth trading my stuff. I've barely moved. But I did see on forums that just because you are at 45 in line doesn't mean you aren't going to get the game because most people have it on hold.
I still think Gamestop isn't that much different than this site though. Yes, you are getting close to full price back on newer games at Goozex. But, you are also getting used games at a time where they probably have gone down to around 20 dollars at Gamestop. So, if you trade your week old game to Gamestop you'll probably get around $35 back on a $60 dollar investment. That buys the game you waited months for on Goozex plus some. Goozex only makes sense to me if you're looking at getting a bunch of 200 point games.