Thumb Score: +1

There is an AMEX offer to get $ 100 back when spending $ 300+ at mrporter.com

They have the Go Pro Hero 5 black for $ 400
https://www.mrporter.com/en-us/me…0618?ppv=2

Hero 5 Session $ 300
https://www.mrporter.com/en-us/me…0619?ppv=2

YMMV (My cards had spend $ 300 get 10,000 Membership Rewards points)