I just got my K100D, and I decided to stop by a local camera store while I was waiting for something, maybe take a look at some filters or something. They have a box near the back of the store with some random lenses, $5 each as-is (no returns, etc.). I took a look, and didn't see any K-mount lenses, but decided to ask the guy if they had any just in case. He dug around in another box behind the counter for a few minutes, and he pulled out an Ozunon 35-75mm k-mount lense. Nothing crazy special, but pretty good for 5 bucks. We stood around and talked for a few minutes, and then I had to leave. The guy then surprised me and said "Go ahead and just take that lense, don't worry about it". I ended up buying some lense tissue anyway, so I left the store with the tissue and a new lense, all for $1.35. The lense is in great shape, no scratches on the glass or housing, and it works perfectly. Looks like I'll be shopping there from now on.