Great read. To summarize, I think this issue comes down to the fact CF didn't design well around the scenario that someone may upgrade their image storage capa

Great read. To summarize, I think this issue comes down to the fact CF didn't design well around the scenario that someone may upgrade their image storage capacity multiple times in a billing cycle, which seems to be the case for the author. If you only upgrade zero or once each cycle, it's not too bad. I understand they want it to be prepaid. But I wonder why they don't just do the calculation upfront and charge you the difference (times the remaining days in the billing cycle) every time you upgrade.