Ah! So . . . if I want AT250, 1 Hopper and 3 Joeys I can expect to pay:
$74.59 (AT250)
$12 (DVR fee)
$21 (3 Joeys)
$107.36 (Total)
Wow! And that's not even accounting for Internet and phone service, for which I'm paying $135 a month now.
Even when my Mediacom bill goes up $50 with no dickering, I'll still be paying less to stick with them.And that increase includes HBO going to full price.
Well, wasn't what I hoped to find, but at least I know.
Thank you all for your help. I guess I'll be staying with Mediacom.