Yes, you can. At least, I think you can. You'd have to get new mounts though, obviously.
I bit...not sure what for though. I'll figure that out later. Already got the order confirmation. I believe the company is going out of business. All 3 sets of monitors (219, 319 and 419 for 2 monitors, 3 monitors and 4, respectively) were on sale at Buy.com for around this same price, so I know it's not some hijinked or price error.