You would think but I'm from the north east and it only cost $15 for the 40oz one at Walmart.
I recently bought a Bubba brand thermos and even in dinner the ice I added stayed ice for almost 2 days. That was when I left it in the car. Love the thing, it just works very well and isn't too pricey.
I thought the same thing at first and was really confused then I found out they were taking about the drink cups and am even more confused.