Quick Fix (Broken Check Out Button)

We have a basic wordpress site that has a few products for sale. When ever you go to checkout after adding the products to your cart it usually links you over to PayPal and populates the order and total on the PayPal page for you. Well, when I added to new products for some reason each of them whenever you add them to your cart and click checkout it does not transfer you to the PayPal payment page as it should. Instead it just loops back to the same cart page you're already on. There are many products however only the last two products we added stopped sending customers to the PayPal payment screen. Those two products can be seen here: Example of both NON WORKING items. When you click "MAKE PURCHASE" button screen just refreshes and doesn't move on to PayPal. 1. [login to view URL] 2. [login to view URL] Example of item that works: 1. [login to view URL] After adding the above example to your cart you will see that after you input more info and click on the "MAKE PURCHASE" button with ONLY this item in your cart you will see that it transfers you to PayPal as it should. All of the items on this site work properly and send you to PayPal except the two outlined above. We want the same action as the one above that does work to happen when you select either of those two new T-Shirts that currently do not work.