Action DVD has a whole load of Vivid DVDs for under $10. The cheap stuff includes some older titles like Asian Butt Sluts (it looks like 2-3 years is the cut-off date), along with lots and lots of compilation DVDs.
Action-DVD is always the best place for ultra cheap DVDs. Here’s a couple others that looked worth the money:
Neverending Brunettes from Sin City has 24 hours of footage! And MILF Tales from VCA looks good as well.