Thanks everyone for the feedbacks. I did pick up the cameras and lenses. The lenses are very clean and the bodies have your normal ware, but are fully functional. The lenses are SMC Pentax-M 1:1.4 50mm & SMC Pentax-M 1:2 35mm.
Coming from P&S, I'm very new to DSLR - let alone manual lenses. I have a Pentax K100D with the kit lens and a DA 50-200mm lens. I was going to get a couple more of Pentax quality DA lenses, but prices for them have gone up like crazy in the last few years.
Now off to read up on how to use the K100D in manual mode with these lenses.