Well, vendors pay for more than just the shipping charge, they also pay for packaging and other shipping related costs. Anything a business spends money on has to be re-earned and should be re-eanred at a profit. The point of business is not to break even it's to earn a profit and that's a good thing. Anyone who doesn't understand that won't stay in business for long. Profit and capitalism are the reason anyone enjoys the standard of living that they have in the free world. There is such a thing as obscene and un-fair profit margin but no one is earning that on shipping.
Keep in mind as you vent that vendors likely make a very, very, very small profit if any at all on shipping. Some vendors offer shipping discounts or even free shipping on orders over a certain amount or for various products. They are not just going to throw that money out the window however. It's made back somewhere else. I enjoy getting free or cheap shipping as much as the next guy but as someone who has worked in the retail industry in one aspect or another my entire adult life I understand the costs that businesses incur, costs the customers don't fully appreciate; especially on shipping. So I'm sympathetic.
TOFLAC-U, AOM, LEMS/ Stay back! I have a Merkur, and I know how to use it!