ST-4 for sale. Head is in great shape. CPU has a minor scratch or two and some lettering is starting to flake off. No manual or software (both avail on sbig website). Price is $500 + shipping in CONUS.
Cashiers check or money order preferred but Paypal accepted plus 3%. Thanks for looking...
Additional info: The cable that connects to the mount works with my AP 900GTO mount. I think that means it will work with most other mounts too.