Numerous sites are reporting that Texas Hold'Em on the Xbox Live Arcade will be FREE for the first 48 hours on the marketplace, otherwise after that you will have to part with 800 MP points ($10.00!). Xbox.com had this to say...
Microsoft isn't bluffing: Log on to Xbox Live® within the first 48 hours after launch and download Texas Hold 'em completely free of charge! This full-featured poker title for Xbox Live Arcade on Xbox 360 will launch on Wednesday, August 23, at 0800 GMT (1:00 A.M. Pacific Time).
For 48 hours only through 0800 GMT (1:00 A.M. Pacific Time) Friday, August 25 a special limited-time only promotion, all Xbox Live Gold and Silver members can download (and own) the game at no charge.
So if your up next Wednesday at 3am Central grab this, if not at least you have 48 hours to get it.