Here you go: http://www.alibaba.com/product-detail/working-lifting-table-...
This is the search I used, if you're curious: http://www.alibaba.com/trade/search?fsb=y&IndexArea=product_...
#Edit: Extra link
EDIT: Holy wow, I totally missed the shipping on that thing! Anyway, I'm sure there's more affordable options there, for those in the market.
Jiecang and Linak are popular suppliers to a number of US companies who use the bases, add their own desktops, and distribute to US customers for $500-$1000
I don't have this particular brand but a feature I appreciate on my adjustable desk is the ability to save height presets.