Given that most retailers are selling the Vega 64 GPU for - and I'm not kidding - $850 or more, a GTX 1080 for $720 is a nice deal indeed.
It's not the Founder's Edition pictured above, but through Futu Online's eBay store you can get the MSI GTX 1080 X OC model for $719.20, cheapest shipping included.
That's about the same price as what it'll cost you to get a Vega 56, and maybe even a little cheaper depending on your preferred retailer.
(To get the discount, you'll need to apply the discount code PICNIC, as seen in the screenshot above.)
More than 10 cards are available at the time of writing, which doesn't sound like much. But then again, high end GPUs don't usually sell by the truckload in the first place because they're so expensive.
So whenever a discount comes along, it's worth jumping on - especially with recent news that GDDR5 RAM prices are on the rise, which the GTX 10 GPUs all rely upon.