Just got this email from Glossybox:
Six month subscription = $115 - $25 = $90. mrrebates.com has $3 cashback -- ebates and fatwallet have $2.75. So at $87/6 = $14.50/box if you don't have to be taxed on your Glossybox.
You have to be in it for the long haul, but I figured since a bunch of us get GBs anyway, no harm in pointing it out :3