My thought about pricing is this:
I don't have a group that plays online. I have friends all over the country who might be interested in this, but I doubt I could get them all to pay $70/year each for the privilege. So my hope is that Wizards is trying to make the VTT buy-in for a player less than DDI, not more. If they're getting some sort of money from each person in a group, that's probably more than they're getting now from a group with, say, the DM subscribing regularly and most of the players updating the offline CB twice a year.
I don't have a group that plays online. I have friends all over the country who might be interested in this, but I doubt I could get them all to pay $70/year each for the privilege. So my hope is that Wizards is trying to make the VTT buy-in for a player less than DDI, not more. If they're getting some sort of money from each person in a group, that's probably more than they're getting now from a group with, say, the DM subscribing regularly and most of the players updating the offline CB twice a year.