This was the controller Seawind installed as standard equipment for the two 120 watt solar panels on my SW1000. I removed it in 2008 when I installed a Blue Sky MPPT controller. It worked when removed, and has been stored in a static shield bag (that the Blue Sky came in) inside my house since. I also have the original manual and other literature.
These sell new on ebay from various sources for $100. So $35 plus shipping for a used one seems fair. SHOULD fit in one of those small USPS boxes and ship domestic for $5.80. (Need to check though, as it might be too wide.)