Amazon

H-E-B delivered an exclusive promo code worth $20 off orders of at least $100 to unofficially compete with Amazon’s Oct. 13-14 Prime Day.

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.