The way to figure out the shipping cost out is to put items in your cart. View the shopping cart and click on the "Estimate Shipping & Tax" link.
The shipping cost is based on the total weight of the items in your cart and your location. Our system uses a real-time shipping quote from the US Postal Service servers. When you go through the checkout process, our system pulls the shipping rate from the USPS based on the shipping address and the weight of items in the cart.
(If we did free shipping, we would have to raise all our prices. We believe not having free shipping and keeping our prices lower is a better, more fair way to do business.)