Using the Rakuten SAVE15
coupon brings this bundle down to $297.50, which is as cheap as the Refurbished versions on Rakuten. It is sold by Focus Camera, who is a Sony authorized retailer. As of this posting there are only 11 left.
The power bank looks to be this one from Monoprice [monoprice.com]
that retails for $20. Which is a 5,000 mAh 15W USB-C and USB-A capable pack.
Power Output: Capable of delivering up to 3A / 15 watts of power to the USB-C™ port or up to 2.4A / 12 watts of power to the USB-A port, this charger is powerful enough to charge multiple power-hungry devices.