Hi yes I had a free post issue this week where a buyer made a best offer I accepted and then they processed payment thru paypal selecting local pickup so as not to pay p&h - I'm in NSW.  they're in VIC.  I refunded their payment, emailed them and resent the invoice explaining they hadn't paid for p&h.  they next paid with bank deposit.  could have just been an oversight  ...................was your buyer in vic and do they have in the early 400s feedback?