Yeah customers don't have the right to complain about postage, and considering ebay says you can charge as much as you see fit for your handling i honestly don't get why the hell ebay even made postage feedback an option to begin with.   For a smart bunch of now rich cookies whom made this site, they did not go over it with a fine tooth comb very well

No you CANNOT charge whatever you like...I suggest you familiarise yourself with ebay policy and stop giving incorrect advice...

http://pages.ebay.com.au/help/policies/listing-shipping.html