I'd like to convert to a standing desk, but the prices are ridiculous. I don't need a motor and am not paying $795-1500 for a plank of wood and four metal legs. I'll build the thing myself before I go that route.
It's $315 and is much classier than the cheap drafting desks. I also use it outside on the deck in the summer.
http://www.frenchbistrofurniture.com/product/F-0250/Fermob-F...
Also, a four-drawer dresser is about the same height as the table above. They are very easy to find at flea markets or estate sales for next to nothing, and are perfect for standing with a laptop.
http://www.amazon.com/Alvin-Folding-Drafting-Woodgrain-Round...
Regarding the bistro table, I would say it's about 20% more stable than you would expect. Pretty good for a laptop. I wouldn't put a 27" iMac on it, though.
The desk surface can be mounted at various heights.