Actually, the $5.99mthly charge is for the multi sports package. The regional sports Networks should be available in pkgs At100Plus and up. If you do not live in an area that can get them then you can get this package but you will get a lot of blackouts, doesn't seem worth it to me, unless your in to some of the shows they have besides games.
As far as subscribing to them, I would never use the website. I don't trust them, then again you can't trust half the reps they have but I would call. um?.... good luck...
Also, the regional sports networks are in a way like locals. You have to be in a certain area to be able to subscribe to them. They should tell you yes or no when calling. # is in the quote.