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Items in shopping cart have stopped calculating correctly

We are having an issue with the shopping cart not calculating the prices when a customer chooses anything other that the default option. The site was working fine up until about a week ago. Nothing has need changed in the products list or the shopping cart so i am not sure what is going on. The live site is www.durdenpecan.com. If you go to the products page and choose an item with any option other that the 2lb default you will see what i am talking about. Any help would be greatly appreciated.


Here is my site Read-Only:

https://preview.webflow.com/preview/durden-pecan-co?utm_medium=preview_link&utm_source=dashboard&utm_content=durden-pecan-co&preview=4428b444181da90c4027bb74572a4902&mode=preview