I know you can buy the Assos Swiss jersey for 120 instead of 180 SFr but haven't come across other reasons to stump up the membership fee (I do want the jersey though...)
What are the benefits? Their website is a bit shoddy and not clear on why you should join. I am still a British Cycling member, which is a no brainier as it gets you third party liability insurance and discounts with Halfords and a few other retailers.