Some people were upset when the ball marker showed up in their shopping cart as $0.00 cost and now they are finding out they have to pay for it! However, As posted already on TCC and posted on the SC.com website:
"In the event a product is listed at an incorrect price or with incorrect information due to a typographical error or other error in pricing or product information, we will attempt to correct the error where discovered. We reserve the right to revoke any stated offer for any reason and to correct any inaccuracies or omissions, including after an order has been submitted and whether or not the order has been confirmed and your credit card charged. ...."
So yes, they can retroactively charge you for the product.