Is this too Lame?

So, I got an invitation in the mail to join Golden Key International Honour Society. I guess I'm in the top 15% or something. It's a one-time $80 fee to join and get discounts and possible scholarships, plus, it's something to put on my resume perhaps. I'm already a member of Phi Kappa Phi Honor Society, and that's on my resume. So...is it worth $80 or is it just douchey?