Siguro people buy them out of convenience or panghihinayang na lang. I mean, pag Sale, people flock to the stores with the expectation of big discounts. If there are not too many titles on special sale, siguro people tend to buy na lang the titles on regular sale (the 299 Viva's and 350 Warners) para di naman sila manghinayang sa pagpunta nila. Also I think people still expect those regular sale DVD's to be priced much lower during special sales, so ang tendency, di muna pinapansin pag regular days, and when a special sale day comes, if the prices don't go any lower, then what the heck, bili na anyway.