This Igloo Extreme 7 35 qt was about $19 when I bought it, I can't remember when. It keeps ice longer than my 50 qt high dollar cooler.
At walmart the lady had 3 cases of worms she was putting in the display cooler. I asked what she would do with the cases, throw they away. A double wall cardboard box with a styrofoam cooler inside with thick walls. The inside of it was scalloped to hold the containers and a gallon antifreeze jug in the center. I can freeze the jug, place it in the cooler and pack it with frozen stuff and close it. It will keep things frozen for 3 days sitting on the ground at my camper.
At an auction they sold 50 qt styrofoam coolers with 2 1/2" walls in a double wall cardboard box. People were throwing away the cardboard, I told them not to. First night they sold for $12, the last night they sold for $3. They sold for over a month, the seller had 250 of them.