I saved a mint by buying 2 extra pack and plays at Once Upon A Child. We were going to be doing a lot of travel this summer and I didn't want to be schlepping PNP's around. Bought one for my mom's house and one for the beach house. Cost: $20 each. Condition: perfect, seemingly new (would have thought they were new if I hadn't bought them at the consignment store).
These were basic ones, not the the super fancy ones with a canopy, bassinet and changing table. But perfect for our situation. Plus, they were Graco, the only brand I wanted (easiest to open and close IMO). You might want to give it a try!
PS. I found that my baby much prefers to sleep on the super-comfy velour type sheets. Was able to get the ones that fit the PNP at BRU. Adds a nice finishing touch.