Yes it is annoying when people abuse these systems (happy hour) unfortunately EBID cant put a blanket price for postage in this or any category as different items cost different amounts to send.
I hope that people coming here from feebay will start auctions at sensible prices and charge appropriate postage as there are no listing fees and therefore it dosent cost more to start an auction near where you would be happy with the price.
Again read all details about price and postage and feedback before bidding.