Which cloud or physical server hosting providers provide either user configurable hard spending limits or the option to (only) pre-pay? The big 3 cloud providers obviously don't, and neither does DO, I believe (you can pre-pay but not as your only payment option).
For personal hobby projects taking your chances on customer support goodwill in case you rack up a bill that would bankrupt you due to a wrong click seems kind of insane.
So what are good alternatives?