It also totally depends on the area you live in.
Certain titles will sell better or worse in certain areas.
I used to work in multiple stores and in the more redneck areas, Basketball titles NEVER sold well, yet you'd go 35 miles into the citry and they couldnt keep them in stock. Certain areas will sell it better or worse.
One person may go into their walmart and find 22 copies for sale, another person may go into a different walmart and find only 2 copies left.
There really isn't nothing wrong with reserving your games, if you know your gonna buy it anyways, if your putting $5 down on it to make sure one is held for you, what is the big deal about flipping out over it?
They arent makin any extra money off of you, all it does is assure they will make the sale and that you'll get the game you want.
They are running a company and wanna keep sales as strong possible.
Some of you people need to chill out.