It would be nice if cloud offerings like Hetzner would allow one to set the contract duration and pay in advance, for example, one year. And once that year passes, you could tell them to extend it for another year, or do nothing and get your server deleted. This way you have a control over your spending and avoid surprises. I guess some providers (OVH?) allow you to do that, but of course it requires that all costs be fixed and have no "extras" for bandwidth consumption or things like that.