50$ is fine because the price isn’t going up or down at all. You just get to choose when you wish to purchase... earlier or later. It really is that simple. You are being given extra choice, this is not a funding mechanism to develop the game, it is already fully funded. If they wish they could pull the EA back and develop in private for the next 5 years. There is no financial pressure at all. They just want some community involvement in the final stages from their fans.