[scotu]

If you are willing to make your own, very non fancy setup, you can have a standing station for quite cheap compared to a proper standing desk. You can use a custom made piece of wood to put on top of your current desk, use books, boxes, even soda cans :) https://www.flickr.com/photos/marcoarment/3234209861

Personally I like to alternate standing and sitting. Since this is not going to be an adjustable desk think about having a way of quickly repositioning monitor/laptop keyboard and mouse on 2 levels instead of just the standing level.