Sellers have their specifications, so I think Buyers should too.
I am a serious bidder, if I bid on something - I want it. I carefully read the information supplied and buy according to the information given.
It does not take much to get full positive feedback from me.
However, I am also willing to report those who do the wrong thing. If you state an item is coming from Australia - I expect it to come from Australia. I often purchase items from overseas and if that's what I want - I am willing to pay the shipping price to have it sent from wherever in the world it is located. But if something states it is in Australia - I expect it to be post marked FROM Australia.
I will not give feedback until feedback has been received. I will always try to pay immediately after auction, in doing this, I believe I have completed my end of the deal. I ill give feedback when the item is received and to my expectation (based on seller's description).
If I am unhappy with the item, I will always contact the seller before leaving any feedback. I am always happy to resolve any misunderstandings.
In closing: Do unto others - Karma is a bitch :)