Hey, thats my silly website
It's because the shipping price was set without us confirming it. However as the group buy thread had already been going a short time I didn't want to change the pricing, instead we have absorbed the shipping prices and charged a flat rate. As stated in an earlier post, select direct deposit and it should get around the issue. PM me if you are still having dramas.
For anybody who missed the group buy, as long as your payment is in by the end of this month you will get the discounted price.