If the Galaxy Note 5 is essentially a larger Galaxy S6 with a stylus, the Edge+ is a larger version of the S6 Edge. You want a big phone with those fancy sides, and Samsung understands. The company hardly shies from the chance to produce another model that you might buy.
Thing is, the Galaxy S6 Edge+ typically goes for over $700. Needless to say, that's pretty pricey for something you're ultimately going to drop on the floor a few times. Fortunately you can get a new, unlocked one on eBay in black for $600.
Note, this is the international model intended for use in North and South America. It'll work on US GSM carriers, though you won't have all the same bands. You do get LTE bands 1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 26, and 28. You can also unlock it for use in other parts of the world after making a request using an American SIM card. That said, the seller is only mailing devices to addresses in the US. Shipping is free.