The Samsung Galaxy Note 5 is really the only game in town when it comes to a 2015 flagship with a stylus, but the US carriers want so much coin for it—over $700 most places. You can get a brand new unlocked Note 5 on eBay right now for
$590. That's a much better deal.
Update 9/28/15: Now back in stock and $10 cheaper at $579.99 in this new listing.
This is a new, unopened device. A lot of the unlocked devices on eBay are carrier phones that have been unlocked, but this one is factory unlocked. It supports most of the bands you'll need for North American GSM/LTE carriers and then some. The only limitation is no AWS 3G for T-Mobile. If you're in a 1900MHz re-farmed area, you'll still have 3G, though. The LTE bands are great with 1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 26, 28, and 40.
The Note 5 will ship free in the US, but there's no international shipping option this time. Tax is paid only in California and Kentucky.