Moving sale, local pickup from Cupertino, CA only.
Have 6 corner tunes with bases and 1 tuning board, $20 each.
I also have the brackets that allow you to mount a corner tune atop another to have it reach and cover 8 feet.
They are highly effective and they are in excellent condition. With the help of these, and about 2 months of painstaking inch-by-inch speaker positioning and tweaking, I was able to achieve a 3D setup at my last house - it was magic when the music played.
(I also have lots of their modular rack equipment that I will sell for cheap - $10-20/pc)