The LYTRO full light spectrum camera was released earlier this year to the public. It is a first of it's kind camera in technology and physical design. Models are appearing on eBay for just under $200.
Although I am very impressed with the concept, I am not impressed with the apparent noise in the final images. Hopefully, future models will remedy this problem. In the mean time, I will occasionally check eBay for a model for under $100
Mark's Price Point: $95http://www.lytro.com/