[NCRadioMan]

You can get the 120qt Polar Igloo on the Walmart site for $59.

For humidification, I use one small water pillow for my Coleman Extreme 78qt coolers. I usually refresh the water in those once a month and so far, I haven't had to use anything in my 60qt Igloo Cube. It has been full and left shut for almost a year and rh is a steady 64%. I need to open it soon though to change batteries in the wireless hygro.