For under $500, a better solution would be the new IKea Bekant motorized standing desk. We just got them for all our developers and they are great. And given that it's an Ikea product, you still get a similar DIY experience when assembling it.
Other than that, they're an ideal way to try out standing. Even if it's not for you, you still have a motorized regular desk (which encourages people to find he ergonomically ideal sitting height, something often neglected) and the price is about the same as most bog standard manually adjustable office supply desks.
If you are not near an Ikea and can't think of an excuse to do a day road trip to the nearest one, you might consider some of the motorized/adjustable desks on Amazon (just search for those terms).