I find it nearly impossible to navigate adobe.com. Takes like 2 or 3 days of visiting, getting frustrated/lost and then stopping for me to get the latest version of flash.
It's hardly difficult. You click Store > Adobe Store and right under Photoshop are 3 buying options including the subscription.
Once I found that it was ok, but the linked article led me down a wild goose chase with this link - www.adobe.com/go/cssubscription. Or maybe I'm just being slow today.