Amazon.com, Inc.

Hallmark Cards' Crayola sent an Oct. 13 email to registered consumers touting up to 30% off select products "today only" for Amazon's Prime Day.

Target.com is indirectly competing with Amazon's 2020 Prime Day event by reprising its "Deal Days" sale on Oct. 13-14.

Best Buy is taking on Amazon’s Prime Day by kicking off its Black Friday savings early this year, on Oct. 13-14 (concurrent with Amazon’s event), with dozens of deals and a "Black Friday Prices Guarentee" for loyalty members.

L'Oreal sent an Oct. 13 email to registered consumers inviting them to shop Amazon Prime Day deals for up to 25% off "beauty must-haves."

Ace Hardware is promising online shoppers up to 15% off select items Sept. 13-14 to unofficially compete with Amazon's 2020 Prime Day event. 

BJ’s Wholesale Club is competing with Amazon Prime Day by launching its Black Friday holiday campaign early this year.

Body care company Alaffia ran a sponsored Facebook ad touting 20% off its "best selling kids bubble bath" for Amazon's Prime Day.