This mount is only 3 months old. I am the original owner and purchased it from Oceanside Pacific Telescope. I have all the recipts. It is in excellent new condition and includes several upgrades including upgraded level 3 software( I had to buy the $160 chip extra and install it), Dec lock knobs($100), custom wheely bars with 4" wheels ($300). It has been used only about 5 or 6 times. The only reason I am selling is to fund an AP600 that I have recently found. I paid close to $4000 will sell for $3550. Prefer direct pick up in Southern CA.