Well, on the bright side, I am sure the sellers of consumer electronics have much more problems then we do.
I am considering starting another venue with used DVDs. Have stock with over 1000pcs, mostly very recent titles, Block-Buster out of circulation units, etc and good source for them. I watched few, maybe 10-20 between me, my wife and kids, they are all fine. But I am little concerned with target audience, my occasional customer from hell buying integrated circuits is probably heaven to what awaits for a used DVD seller.