And then anyone who doesn't have extra resources is prevented from using your service... As if it is a trivial amount, spammers will pay it, and if it is non-tr

And then anyone who doesn't have extra resources is prevented from using your service... As if it is a trivial amount, spammers will pay it, and if it is non-trivial, then some people won't be able to afford it. Doesn't seem like a great idea.