Stupid online shopping

So I am online shopping at JoAnns for some fleece fabric that is for a awesome price when all of a sudden my cart worth of 46 dollars jumps up to 110 dollars. Apparently the sale ended at midnight eastern time and I had to say farewell to some awesome christmas presents. Argggg I can not believe that they would just change the price of things in my cart while I am in the process of checking out. Arggg Argggg and Arggg