SBIG Relay Adapter Box with cables. The unit's normal price is $109 plus about $7 shipping.
This is a must-have item if you wish to use your SBIG CCD camera with a Losmandy mount or other mount that does not use a digital interface. It isolates the camera from the mount and safely triggers the corrections. Without it, you can burn out the mount's electronics!
$60, pick up in San Francisco bay area strongly prefered.