I saw this on the site, and I knew it would be perfect for my soon to be 4 year old boy's room. I wanted something that would be strong (hellloooo 4 year old boy!!) and not too "babyish" to last him through several years of preference changes and growth. This was not too difficult at all! Though I slightly modified some of the construction to make it easier to break down. I ended up using a box spring with a mattress, instead of slats to save a bit of money. (We got the box spring and mattress for free from a relative.)
I made this out of pine, and bought everything from Home Depot. Total cost for everything (including paint, sandpaper, wood glue, etc) was about $160! We are loving it!