I had a look through his offerings yesterday and there are some very cool subjects available! I've built a few paper models now and it's a cheap and very different way to model. It's a much cheaper option for real space subjects, for example.
One gripe though: I wish paper designers kept to the standard plastic/resin/vac scales! At least the Murph's Beech Starship is 1/48 instead of one of those oddball scales.