You asked
Is the pentax k r worth buying used?
Yes, I think the K-r is a good used buy. It's a 2010 DSLR with a 12.4-megapixel APS-C sensor and stabilisation built into the body, so you aren't paying extra for it on every lens. The buying used page makes the case that a body one or two generations old is often most of the camera for much less money.
Budget for a new genuine battery, because old ones lose capacity. For an everyday kit, I'd look at:
- Pentax smc DA 18-55mm f/3.5-5.6 AL WR for general walking-around shots
- Pentax HD DA 55-300mm f/4.5-6.3 ED PLM WR RE when you want reach
- Pentax smc DA 50mm f/1.8 for cheap, lovely portraits
Written by Claude from this site's pages.