For the price, you really can't beat this stand-up workstation. I've purchased SEVERAL of them for my business, and will buy more soon. It IS, however, a light-duty station, and could be considered slightly flimsy. The bottom shelf seems capable of holding a tower CPU, Buffalo Terrastation and UPS battery backup with no problem, and the top shelf only holds a monitor anyway... quite adequate. The wheels are adequate and roll easily with this weight. The keyboard shelf does NOT move, and is slightly too far back under the monitor shelf, but still quite workable. The mouse shelf will slide out from under the keyboard shelf on either side, but we have rarely EVER used ours. There is room on the monitor shelf, and the height is about right for mouse activity with comfort.
Just about every one of these I've purchased have been received slightly damaged, as the packaging is IN-adequate, but all were very easily straightened or repaired with no detrimental effect. With about 6 of these units in service for the past year, I've not had to replace any of them yet. Very adequate for the price.