Lord of the Rings Online's Rise of Isengard expansion earlier this summer will probably want to mosey over to the game's official forums. Turbine has revealed the point costs for all of the new content, and due to the variety of items on offer, it may take you a few minutes to piece together what you want (and what it'll cost you).
The short version is that the expansion quests and deeds will set you back 3,250 Turbine points, while the new Draigoch raid will cost an additional 1,250 TP. There's also a bindable item called Derudh's Stone that grants a permanent 25% XP bonus on monster kills through level 64, and it is priced at 995 TP. Finally, the new Update 5 instances, currently slated for a December release, will run you 1,495 TP.
There's more info, and a load of comments and discussion, at the official LotRO boards.