Out of capacity | me-dubai-1
"Out of capacity for shape VM.Standard.A1.Flex in availability domain AD-1. Create the instance in a different availability domain or try again later. If you specified a fault domain, try creating the instance without specifying a fault domain. If that doesn’t work, please try again later. Learn more about host capacity."
It appears that boot volumes now have a cost estimation on the menu, despite being well below the usage limits in my free tier account.