I've been using Skarsta since August 2015 at my home office. I'm pretty satisfied with the desk.
I always wanted a standing desk. I saw pictures of many awesome home-built desks here at HN so I thought that I could built myself one too. However, it turned out that it's not very easy. So I started looking for one at local shops.
Fortunately, IKEA is about 10km from my home so I went there and asked. They told me they have some Skarsta desk. Long story short, I bought it for 200 Euro (the larger version). The assembly took max 1 hour. Initially, the desk was a little "bendy" and unstable, but I discovered that the screws were not tight enough. After tightening them, the desk is pretty stable, even at the highest position.
I'm about 190cm tall and at the highest position, I can comfortably work on the desk. What I like the most about it is that it's pretty huge and spacious. You can put three 22" monitors on it + smaller speakers + mechanical keyboard + notebook for drawing without a problem. Although you have to manually get it up and down with a handle, it usually takes something like 30 seconds and you can look into the monitor while doing that. :) It's a good training for your hands.
All in all, Skarsta is very nice and comfortable standing desk for a reasonable price. Since owning it, I no longer understand all the standing-desk startups with their smallish desks for Macbook + one monitor for 500 bucks. What is more, you can put a spin bike under the desk and exercise while doing a light work, reading or watching videos.