15 GB is free over at Google. Does that mean my data is really worth $40 a year to them. I do realize this is oversimplifying things...
One option would be to "self host" at Digital Ocean. For the same $120 I would get 30 GB storage and I could use the VPS for some other things. But even DO themselves try to dissuade you from doing that (on reasonable grounds I believe)[1].
[1] https://www.digitalocean.com/community/tutorials/why-you-may...