800 points each is crazy. I played Yahtzee at home with my boy last week with five dice (dollar tree) and a printout of the scoresheet. I like board games, but I'm not going to pay 10 bucks each for these games.
I like the concept and the format, but I think this is hitting the wrong points--most "casual" gamers are probably either on the Wii or playing Peggle, and lots of other noncasual gamers are probably not going to drop 10 bucks each on them.
I do like XBLA board games, but the benefits for me are: cheaper than a hard copy, easier to deal with games with lots of pieces, playing online because no one in my household likes the game. None of those are true with these Hasbro games.
Bring out Talisman or the like, like they were supposed to, and I'll buy that. I'm not trying to be a game elitist, but while I'll still play Sorry or Yahtzee, those games don't hold that much appeal to me anymore.