What feature is this you are talking about? Can't you see on your search the start price & the shipping cost at this time? If common sense can't tell you that something that is only 99 cents has a shipping fee of $15, that you pay $15.99, something is wrong. Any buyer can figure that one out.
It's called buy it now. It is a tab to click that will show the customer all hidden costs.
I'm not going to respond to the rest of what you wrote. It appears to be an attempt to slam a person or make them feel stupid. I'm sure someone else will fill you in and being willing to share some examples of how unknowing buyers get ripped off all day long on this scam.