Google had the most reasonable trial plan. You got 60 days and $300 of services, and if you ran over it would just pause them until you decided to pay and upgrade.
30 days in, and I’ve blown through the $300 :-O . I wasn’t paying attention because it’s not real money. I’ve had one VM on since I started, and I fired up two more for some reason or other and never bothered shutting any of them down. $100/month per VM sounds a bit rich for my lab needs, and since I am the lazy, forgetful type I am reconsidering how much experimentation I want to do in the cloud. I’ll definitely do some things, but I think I’ll make a point to stop and destroy all VMs immediately; perhaps even set up a self-delete script in case i get distracted.
I may hang on to my lab machines for a while longer.