Yes , I had the same BS lately and the women behind the counter was really good and said ' This is not common knowledge but if I put my box that was going to cost $27 into one of these here Red post satchel for $1.32c it will only cost me $11.00 ' .
I payed the extra $1.32c and saved $16 , go figure. This information is not told to us , the unwashed public.
Next time any of us post items that fall outside the cut off weight when it gets silly expensive. , ask for a Red Satchel post bag and play the dick,s at their own game.
Brian.