I am selling a Klee 2.8x barlow in good condition... has set screw marks, includes caps. - $64 shipped CONUS
Also selling an Antares 2x barlow I bought from Hands on Optics. It is in excellent condition and includes caps and box. Gary Hand said it was similar to the Celestron Ultima... I think this is the 2 element version. $35 shipped CONUS.
Thanks for looking