I paid $200 for this which is probably too much considering it no longer lifts up and down. The mechanism is sticky, and even with WD40 the desk no longer moves and is permanently stuck in the standing desk position. 
It is wobbly, but that doesn't really bother me. And the max height is pretty short. I'm 5"3', keep it at max height and it's perfect for me. Can't imagine it would work for anyone much taller than that.