The last DVD I purchased was the 3-Disc special edition of Panic Room. FYE had a sale where if you buy 2 or more used items, you get 30% off each. In total I paid about $1.70 for it- mint condition.
The second used thing I got was Chungking Express on Blu-ray, a Criterion release which is newly OOP. I paid $14.00 for it.