I have a very nice Vixen GP-DX w/DD-1 (dual axis controller) with Auto-guide Port (auto guide port professionally added by Norbert Tackman who is recomended on SBIG's web site), Vixen carry case and AC adapter in excellent condition. The only diff between original is that it has a heavier celestron counter wieght instead of the smaller Vixen one. Work and tracks very well. Have used it auto-guiding my Vixen 102ED & ST7e combo and it works very well! Only selling because I am moving up to bigger Tak mount. Asking $1250 for all shipped in USA. Thanks for looking!