Having sold stuff on ebay , I can say that people do not read all the info that the seller has listed, it does not matter anymore, people do not take the time to read anything. And then they blame everyone else because something went wrong.
Now on the other side, sellers on ebay get screwed over left and right, even if the seller was in the right , they can and do sometimes lose the money they make on sales if some one complains .
People do need to take the responsibility to read the info in the actions listing before placing a bid, but again the seller needs to use the tools ebay has provided them with to better protect them shelf's