For startups that "might take off" I would use a dedicated virtual private server as a good alternative to unreasonable bills due to provisioning mistakes. You could be spending that time coding rather than than figuring out if you're making a mistake provisioning. There are too many stories like yours out there.
(I previously asked Dan, the mod here, if I can share in this way and he said it's okay. I don't have other affiliation with that company and have found it good.)
Here is my referral code for the one I use:
https://crm.vpscheap.net/aff.php?aff=15
(I previously asked Dan, the mod here, if I can share in this way and he said it's okay. I don't have other affiliation with that company and have found it good.)