Have you looked at My Kenometer Lite offering? $150 for a Kenometer Lite. If your in the STates add on another $10 for shipping and paypal fees and you've got yourself a basic Kenometer.
The best information can be garnered from the threads linked by it's creator, Kenom. There are a few reviews that also show off it's greatness, the best one I've seen being by Traveller.