It looks like it's a good UI on top of Opscode's Chef platform. You choose your Chef recipes and run a script that downloads the Chef client and starts installing recipes.
So, it doesn't seem to be too good to be true, at least to me. My guess is that this is an MVP for a product designed to put a non-awful UI on top of Chef (Opscode's SaaS product is, imho, borderline unusable).
That said, there is a high bar here for trust, no doubt about it.