I've got one that I picked up at the local Academy closeout sale for $40. There is some limited adjustment to the bench height based on how you locate the pins at the table attachment point. I'm 6'1" and have a folding stool that I use with it and it works great for it's intent, which is more of a take it to the field type of table. I didn't care for the expanded metal table top so I cut and attached a piece of Lexan I had laying around (drilled a few holes in the Lexan and ran some zip ties through). Thing is built like a tank and if understand what it's intended purpose is (and can get a great deal) I'd recommend it. Would I have paid the original $100 asking price? NO.
I ordered the stand and one of the "Tilt and Elevate" rests yesterday (Midway had two of the rests left on closeout). Up till now I've used a Workmate type stand that I clamp a wooden top into for a shooting platform but it was relatively heavy and I still had to put my rest or bag on it. We'll see how this Hyskore system works in a couple of weeks.