I received a well-padded box filled with my models. I built one, just to try it out, and I must say, that I'm very impressed. The wood is solid and the cuts are very clean. The slots/grooves that slide together to assemble the pieces fit perfectly. The pieces are very well engineered.
I highly recommend Underground Lasers if you are interested in this kind of thing. He has an eBay store.
Here are some pics. Eventually, I plan to paint these once I'm certain about the configuration I like (there is some built-in flexibility.)
These "shipping cubes" are stackable.
The ladder you see on the right side is removable.
More pictures to follow as I build additional pieces.