I saw these in the catalog! IKEA has a new power-lift version of this table too...but it's REALLY not cheap.
http://www.ikea.com/ca/en/catalog/products/S49022538/
I think it's a great idea, AND now that IKEA is making them, maybe some other consumer office furniture companies will follow suit and help bring the price down. I think the sit/stand desks are becoming a lot more popular - we have a few here at work and they're really coveted.
IKEA will probably drop the price in a year or two, as well. That's their normal pattern.