Yo Xondat, relax lol. You aren't supporting him, you are just trying to expose him. The sad truth of the matter is that if a large amount of money gets misused, its none of your business. If he doesn't answer you back, oh well. He doesn't have to.
The hard facts are that Evan has been a long standing community member selling products and running GB's way before a lot of us, including yourself. There are way more Minivans, roadkits, caravans, keysets, wrist rests and proxied products from him out there than your X60's and 268's and my Pearls combined. He's partnered with many people to make a lot of other stuff as well, and has always delivered on time and without any scandals. He has the experience and knowledge to sell stuff.
We can only hope that his excellent track record accompanies him with HUB. And If he has set a limit of 500k, its come from planning, number crunching and careful consideration. You don't have to support him if you are scared of his commitment or use of your money, and you are hurting this projects process by instilling doubt and worry into everyone who wants to see it be made a reality.
Give Evan some time to breakdown the pricing of it all and stop acting like a child please. We would all love more than anything to know where our money is going, but the world doesn't work that way.