PPC is legit but I think boycotting dimastech seems like a proper option. Rosty wasn't the only person ripped off afterall, and in a community like this we should have each others' backs when the time comes. I mean so much is reliant on these "custom shops", and these people just go and take 2000euros... that's beyond acceptable. They do well enough to eat 2000euros if they have to. they obviously don't have his build progressed to the point they would even be taking much of a loss...
They still have cascades available to oprder on their website, though. I mean whats to say that someone else won't try and buy a cascade off them and get ripped off for another 2000euro. If dimastech had any sense of obligation to the customers they would atleast remove the product from their website, to prevent more orders of something they obviously can't fulfill...