"Other sellers" actually list it for $22/gallon, on AMZN, someone called "Trutrans". If you want to roll the 3rd party seller dice!
Not gonna roll the dice to save a buck. Plus, you get the free, 2 day shipping for $23. I just bought about 5 gallons of this a while back and got it all in 2 days and in good condition. Good deal all around.