My new camera has an integrated autoguider chip, so I won't be needing the trusty ST-4 anymore. I just got this less than a month ago here on Astromart. I only used it twice, once to check it out when it arrived, and once to calibrate it to my mount. It is amazing how easy it is to use. The CCD head is in excellent shape, the CPU box has a scratch on the surface and some of the white lettering has flaked off (see picture). But the unit is in perfect working order. Price is $475 shipped/insured anywhere in the continental United States. Includes all cables as shown below, has version 4 EPROM.
Thanks for looking....