One problem I'm seeing with the bargain bin (besides it being filled with terrible add-ons) is that almost every add-on has someone asking "LOL WAI DIS BARGAN BINN 9999/999999 LOL EPHI IS TO STUPID TO SEE HOW GOOD DTHIS ADON IS!!!!!!"
I imagine that when that question (there was a question somewhere in there) goes unanswered, people begin to find the bargain bin a reliable source of add-ons. This would lead them to become "dumpster divers," filling their game up with junk. I think you should put a little message on each add-on, similar to the fail bin, about why the the add-on is in the bargain bin.