HOLIDAY GLUT? In the home-video market, this holiday season seems to be dedicated to sales. Some popular old movies have been repriced as low as $20. Two blockbusters, Disney's "Sleeping Beauty" and Paramount's "Indiana Jones and the Temple of Doom" (out just two days ago), are selling for $30.

"Echo Park," the comedy/drama about some colorful characters struggling on the Hollywood fringe and chasing stardom, is due from Paramount on Dec. 3. Susan Dey and Tom Hulce, who starred in "Amadeus," were praised for their performances. Reviews were generally favorable, though in its limited theatrical release, not too many people saw it. The art-film segment of the home-video market should appreciate this one.

CHARTS: Playboy has done it again with its video centerfold series. "Playboy Video Centerfold 3," released by Karl-Lorimar, is in the Top 10 on the sales chart. Playboy and Karl-Lorimar have tapped a market-for inexpensive ($9.95) soft-core porn videos-that no one knew was there.