I have no affiliation with the seller, nor do I know if it's a good price or not, but I found this on eBay, a Kansas City Tracker for $55 buy it now.

http://cgi.ebay.com/Kansas-City-Tracker-satellite-computer-card-ISA_W0QQitem... |66%3A4|39%3A1|240%3A1318|301%3A0|293%3A3|294%3A200

73 de W4AS Sebastian