Hi, and welcome, locke07. Keep checking the Marketplace, and you might find what you're looking for. Today there was a K-7 listed for $625, and an 18-55 for $85. K-x and K-r listings pop up as well.
The Pentax Marketplace | Sell Pentax | Photographic Equipment for Sale - PentaxForums.com
You can also read Adam's Sticky to find out how to post your own "Wanted" thread. Enjoy the forum!