THESE BOXES ARE BOTH AT LEAST 20 YEARS OLD. I'M CLEANING UP MY GARAGE AND DON'T NEED THEM ANY MORE. I'VE USED THEM FOR ALL THAT TIME AND CARRIED HEAVY STUFF IN THEM FOR ALL OF THAT TIME, SO I KNOW THEY ARE VERY STURDY. THE BLACK ONE IS $10 AND THE YELLOW AND BLUE ONE IS $20. THAT'S BOTTOM LINE. THANKS FOR LOOKING.