I recently purchased 5 "CONEXANT NAVMAN ROCKWELL JUPITER GPS TU30 D140" GPS receivers on E-bay (item 320086778609) for $60. Since five is somewhat in excess of my needs, I would be willing to sell a few of them at my cost ($12) if anyone is interested. I can bring these to the local Amsat meeting on Saturday.
For specifications and software please see http://www.gpskit.nl/downloads-en.htm
I am working on a small breakout board to convert the 2mm pin spacing to 0.1 inch spacing to fit your favorite breadboard. I can order a few extra when I send this to the board shop in a few weeks.
Dan Schultz N8FGV