Doesn't matter if you are a member or not. If you AREN'T, than you can either get a year free, or take the year and give a donation (they could use the money).
If you ARE a member, the longer memberships are discounted like CRAZY. Upgrading to a lifetime is down from $1000 to $500. The extra endorsements for lifetime is only another 100-200 bucks. It's not going to get any cheaper if you have been thinking about becoming a lifetime member and have the cash.