No. People are stupid and ignorant.

Ebay doesn't show the lowest-price option by default; its default is "best match", whateverTF that is. You have to explicitly choose "lowest price + shipping". I'm in the habit of always doing this, and generally researching things to death when buying online to make sure I get the best deal, but I know I'm not a normal shopper. Most people just see something that looks good and click on it and buy it.