I think you got an "old pricing plan," which does not include Google Drive
I actually bought an 80GB "old" plan this morning ($20 isn't that big of a bet) after seeing the leak of the upcoming pricing, essentially trying to grandfather in a more favorable plan. While the comparison implies that the old plan doesn't have gdrive, I most certainly have it and have the full 80GB available in it. Further I retain the ability to renew the 80GB plan in a year without adopting a new plan.
Perhaps they are simply saying that the people who bought the old plan got a lower price given that they didn't price in google Drive, however they definitely seem to be rolling that functionality in.
I did the same thing. $1.67 a month (literally the price of my daily coffee) seemed very reasonable for 80GB of cloud storage with all the googly integration.
http://support.google.com/drive/bin/answer.py?hl=en&answ...
I'm in the same boat, having had an 80GB plan for $20/yr for some time now.