Having choices is all well and good, but I worry that making the pricing hard to predict will reduce the reach of this feature. But I guess they are only expect

Having choices is all well and good, but I worry that making the pricing hard to predict will reduce the reach of this feature. But I guess they are only expecting a small subset of users to use it anyway. Why not let the users choose what they want to pay? Because Google needs this to be net-positive for their revenue, but it would be a much better web if there was some kind of mechanism to automatically give small amounts of money (say 1/10th of a cent per page view) to site owners.