Cart Checkout Price Is Inaccurate

Hello!

We’ve just done a new product launch and we’ve found that when a customer does not select a t-shirt size for checkout they receive a significantly reduced price at checkout. We’ve gone through our WordPress settings and all of our products are priced correctly in there. Our developer is out for the holiday so we’re scrambling.

We’re running WP E-Commerce as a shopping cart.

Any help is appreciated.