The coupon is only good for USA buyers and for 1 kilogram spools. FilaCube PLA 2 filaments are made in USA.
40% OFF Amazon coupon code is MADEINUSA40 Expiration date: August 5th, 2018.
I bought 2 rolls of this that just showed up yesterday and I'm working on getting my settings down for it. So far it seems like nice filament. The 40% off deal was a great price. Not sure I'd pay the normal list price however.