Try ebay dealextreme.com
I bought an Adapt 850 data logger off ebay $60. I like it. It uses a standard nokia battery which I like.
You might look at the tracker bugs with sms messaging. You might be able to use it to track a stolen bike or other property.
2000 Montague CX, I do not recommend it, but still ride it.
Strida 3, I recommend it for rides < 10mi wo steep hills.
2006 Rowbike 720 Sport, I recommend it as an exercise bike.
1996 Birdy, Recommend.
Wieleder CARiBIKE (folding), decent frame.