A company I worked for actually sort of made up their shipping prices whole cloth. They had contracts with the shipping companies to get a good deal on shipping, and rarely passed those savings on. So most cases, they charged more than they were paying to ship your product, and in a few cases they charged less. So, the majority were subsidizing shipping costs for a few, with a hefty profit bump for the company. But I don't think they had any real competition, so I guess they could just charge whatever they thought people would pay. They even operated multiple brands for the same exact products/services, just to offer different prices and advertise from a different angle.

So, back to the point, regardless of whether the price is broken out or bundled, there's really no way to tell how badly you're being gouged. Unless you can find it cheaper someplace else, the only question is whether it is worth it to you at that price.