You have around fifteen days, roughly three more videos and possibly more information by Luthier around the net to help you decide if this is worth your money. If not then you can, if you want, come back in a year or so when Europe 1944 hits beta and read what people here are saying about it.
The choice for me is pretty easy. I make just about enough to survive, so in a month or so, or when I can, I'll spend 50 on Belsimtek's Mi-8 and get to fly now rather than pledge 50 and wait a year. But if I could I would be all over this pledge because even though CoD was a debacle, it was and still is the best looking sim I've seen to date. Also, if I understood the second video correctly, the people at Eagle Dynamics Minsk office are the one developing the Europe 1944 terrain using EDGE. On top of that, it is official that Yo-Yo will be the man behind the physics of engine management and flight models of all those wonderful aircraft, so there is literally nothing else to worry about if I had moolah to pledge.