Good points. People should try to understand that shipping is not free, and vendors are constantly trying to have a system for shipping that appeals to customers and is understandable at the same time. But apart from some saving because I live closer, e.g., to supplier X than supplier Y, all suppliers are paying on average the same for shipping (not counting the overhead involved in handling, which on big, complicated homebrew order is no joke), and somebody's going to pay to move that stuff from the dealer to my house. When I buy anything, I assume I'm paying for these things, it's just a question of finding the dealer that works best for me.
Then there's the matter of service, which is somewhat different. Let's use insurance as an example. Companies X, Y, and Z on TV all run ads constantly, telling me that I can save "up to $$$" over another provider by buying their insurance. When I actually do the comparisons, strangely enough the amounts I "may" save all amount to around.....$100. I've been with the same relatively small Midwestern insurance company for nearly 35 years that has given us impeccable service any time we've had a claim on our car or homeowner's insurance. So one of the bigs expects me to switch for $100 a year? Not a chance. The service I'm getting, with real live people to talk to if I have issues, is worth that, and more.