[US] Amazon - AORUS Gaming Box RX580 - 359.99$ after rebate.
This thing is currently 20% off at 399.99$, and there is a rebate for another 40$. That is a pretty killer deal on an eGPU with 100W power-delivery and a RX580 included (the card itself would be around 250-260$ alone).
"Always listen to experts. They'll tell you what can't be done, and why. Then do it."- Robert A. Heinlein, "Time Enough for Love."