I'm a life member and with my new card this year, they sent me a form to sign up friends and/or family members for LIFE membership for $300, (they are normally $1000)
I've signed up 14 for the lifemembership here on Arfcom, including upgrading to patron for myself, and can sponsor more. I cannot take creditcards, but a few guys in the NRA thread in GD can. Here
If you are interested in an NRA lifemembership at a 70% discount, let me know.