I picked my KG-4s up in an antique store (of all places) for a whooping total of $100. They had only slight scuffing here and there, the grills were perfect, but the badges were missing. I found a new pair of badges on the auction site, and this late summer I sanded all of the blemishes out of the cabinets and re-oiled them (Watco) and now the walnut looks really, really nice. The 12" passives are in great shape as well.
There is another pair of Klipsch speakers at the very same antique store, the KG-1.5s, but they are in oak, and the grills are not in the best shape, so I would have to work on that. The funny thing is that the owner wants $150 for these, which kind of doesn't make sense since he sold me the 4s for $100. ????
The bad news for me (good for the wife) is that after 23 pairs of speakers, I pretty much have no more room for such devices............