I got one from my Backerkit order in Feb 2014. Did not build because I did not see evidence that it was worth my time. For example, after I got my kit, the audio output was abandoned. Good idea, but it meant I was better off waiting for the final design than wasting my time. There also was really no evidence that any other Beta testers built them--beyond one or two. The only prints I saw coming out (very few) were problematic, especially with holes in surface.
I'm guessing if there is truly useful technology here that does not already exist in the outside world, that it will be quickly incorporated by people in the build your own sla community. There is a forum on top down builds that you can check out here:
http://www.buildyourownsla.com/
Since I don't plan to build it at this point, I'm selling my Peachy Printer Beta kit:
http://www.ebay.com/itm/222115287108?