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.
Contrary to what that page says, my Google Drive client lists 205GB of space which is the free amount plus the exact amount I got with the old storage plan I have since the days when that was only 75GB (it got upgraded over time for the same price)
1 TB now costs $49.99 per month, or $600/year. This is a substantial jump from $256/year and means it's no longer an attractive proposition...