All those major label, cut-out bin 70s movie soundtracks...Unmarried Woman, Airport '75, Rocky, Rollerball, etc. They're usually sealed and never more than a buck anywhere.
Nope, nor have they mentioned Paul Simon's Still Crazy After All These Years. These two are so common where I live they don't make it to the dollar bin. They go straight outside. Even the dealers are sick of seeing them. Might I mention that they are usally unplayed copies.