I pay $60 p.a.
As regards GA Advocacy :
There is a regular update of their work with US Congress (4 pages per month) and Airport Volunteers (a couple of pages) as well as mentoring programmes for new pilots.
The centerfold (
) page is about IAOPA. I must say I was a bit disappointed by the coverage of the EASA-nonsense, but you do get news of GA Advocacy around the world.
Oh and you also get weather briefing access via their website (not sure whether it was duats or the other one).