I am looking for a provider that supports quickly creating and destroying VPSs (to save the cost when they are not being used) but allows them to the easily restored. The point of it is to test and demo stuff, so I am not looking for performance or a high spec. I am looking for low cost because I may well end up running several at a time so high costs will add up. I am also looking for paying by the day or hour rather than full months. AWS ad Digital Ocean support this, and I think Vultr does too. Who else?