Its not a super high quality chair, but for the price it absolutely can't be beat.  You can't find a chair for a standing height desk for cheaper than this.  Its pretty comfortable, I've been sitting in it all day for a week with no problems.  Make sure you order the arms though, I feel like it'd be too high to not have the arms, especially with the rolling feet.  I know some people said it was hard to put together, but I didn't have a problem at all.