Looks like ROMOSS is part of the Amazon Black Friday sales.
The 60000mAh is $10 cheaper than this deal last time
ROMOSS 60000mAh Power Bank, 22.5W Max Portable Charger Phone Battery Charger with 4 Outputs and 3 Inputs Fast Charge External Battery Pack for iPhone, iPad and More (Fast Charging not Suitable for Samsung)
Others also on sale:
40000mAh $49.49 was $65.99
20000mAh $26.24 was $49.99
I got the 40000mAh last time and has been solid so far.
I'm probably going to remove this line from future deals. Now that I have access to a Samsung phone I've tested it on my Romoss power banks and they're all fast charging ;)