I believe it's also now 14.99 at Target. At first I thought it might have been for T1, but when I took a closer look the tag said T2 Ultimate.

MST3K: The Movie for $7.99 at Sam Goody long after it had gone out of print. I bought it even though I already had a copy.

This Is Spinal Tap: Criterion at Best Buy just after it went out of print. They had like ten copies in stock, but this was a few years ago and I had no idea of the value of OOP Criterions, so I just picked up 1. Man, Hindsight...

Getting Hard Boiled: CC in a trade that was VERY, VERY much in my favor.

Knife in the Water - $15 (New: $40)

Lots of CC for $10 new.
Several OOP dvd's (Disney Treasures, Swamp Thing, etc) for cheap.

40 titles (including: at least 10 two-disc sets, 1 five-disc set, 1 six-disc set, 1 nine-disc set, 3 Criterions, and 1 Superbit) for $600 . . . just this past week at DDD.

Averages out to, at the most, $8.96 per disc . . .