Most stuff I got off ebay is fine. Ebay has some scam protention. Always get stuff sent insured.

I did just get a power amp that arrived damaged - bad packing and then a hard blow to the back, one broken terminal strip (it had screw connectors) fixed with superglue, one volume control had taken such a blow the actual pot was in two halves, and the circuit board held in by two edge mounted pots (not good design) was dangling from the unbroken one (as I found when I got the lid off) but I was able to re-bend the tabs that held the broken pot together and all was well.