The outage, which lasted for hours on Prime Day, resulted in over 15,000 delayed packages and roughly $90,000 in wasted labor costs, according to the report. Those costs don't include all the lost hours spent by engineers troubleshooting and fixing the errors or any potential lost sales.
I assume Amazon has, and will save much more than that by moving off Oracle.
Original source: Amazon move off Oracle caused Prime Day outage in warehouse