Amazon is matching the same deal available at Rebel Sport.
My understanding (based on DC Rainmaker review) is that the Forerunner 935 is functionally the same as a Fenix 5 (i.e it is a unisex multi sport watch rather than only running specific)
Note this may be an end of life clear out as the FR935 has been in the Garmin lineup around four years now. The FR945 is the new model.
The Fenix 6s currently available for less than $500 is probably the better buy, but unfortunately only suitable for those with smaller wrists.