I'm going to agree 100% with what DW said, and also as to why you were able to find such an in demand DVD. FYE and (when we had) Suncoast, these stores had a lot of stuff in their back stock that is completely out of print, or just not normally sold at bigger chains that offer better prices. Unlike Best buy, they don't pull all the older videos, either out of print or released over a year or so, to stock mounds, rows, and gluttonies of movies that just came to DVD. Every time I hear "I can't find a DVD" the complaint has the word "Best Buy" in it. I remember trying to buy a friend a Super Mario cartoon DVD back in 2002 (before I got a player) that I saw only 2 months earlier at Best buy, only to be foiled by 2 shelves worth of Stuart Little 2 DVDs. I never liked them since.
But in this case, we have a DVD that is not only out of print, but LONG out of print and going for a fortune on E-bay... even with the long, pointless music copyright cuts. Why, If I were the kind of guy to do so, I'd buy up all of those I could find and sell them for slightly less than everyone else. But I'm not.