It's a pity the +25GB plan for $2.49 isn't as good a deal. It's $1.20/GB/year compared to ~$0.60/GB/year for all the others. It should be $1.25/month - $15/year. Glad I got grandfathered in with the +20GB for $5/year plan.

Here's all the pricing info I could find for Google Drive, Old Google pricing, Sky Drive and Dropbox:

https://docs.google.com/spreadsheet/ccc?key=0Ag97-edaO5TwdFY...