I liked Jeremy’s review of the Jarvis Bamboo desk but I don’t have $600 to drop on a desk. The price was a barrier to me getting a standing desk for a long time. I considered just building one. I think you could just get a desk top from Ikea and put the longest legs on it if you were really hard up. After a bit of Googling and whatnot, I found an Ikea model that is now discontinued but there are plenty of them still out there. It’s called ‘Fredrik’. I got mine for ~$50 I think. In most of the pictures it shows a desktop at normal height and two shelves above it. You can configure it however you like so for mine one of the shallow shelves is below the desk top, the desk top is at standing height and the other shallow shelf is above holding all of my monitors at eye level. The holes on the upright rails are spaced about 4" (10cm) apart so that is degree of adjustment available.
The downside of this model is that it doesn’t move up and down at will, you have to take it apart to reconfigure it, which isn’t a difficult task as the brackets that support the desk top and shelves just hook into the upright rails. Obviously you have to take everything off the desk so this isn’t a standing and sitting desk, it’s a standing or sitting desk. Once you commit full time to standing, you’ll get used to it after a couple of days.
I would still recommend the more expensive type of desk that can move up and down as it just gives you more options but this works well for me. It is very sturdy and I don’t anticipate it wearing out ever. Also, if the particle board shelves ever wore out or disintegrated I could easily replace them as they basically just sit in place.
If you’re thinking of making the jump to standing desk go for it. I would have difficulty going back.