I have noticed a few intresting things going on:-

Used cameras with a minor issue are being sold for next to nothing,

What is happening? I think it is a case of cameras being too costly to repair, as a replacement can be bought for about the same as a repair bill. This is driving prices up a bit

Pentax M series lenses that are going for sometimes twice or what they were 5 years ago, I watched a 85mm f2 go for over $400.00 ???

and a K 50mm F1.2 go for more on Fleabay

This is I suspect a Digital body retro lens trend of some sort, also Pentax 50mm 1.4 takumar screw lenses are be being bought in the $150-250 price range

On the flip side I bought a 20mm F3.5 AI nikon for only $136.00

I also fixed a Canon AE-1 and a Nikon FE that I paid $20 for.