Well, no surprise... won the next two auctions at low prices, got an email back saying he thought the BIN price was the reserve  :shock: and that he wasn't prepared to sell at my winning bid prices. Then offered me a 'deal' at around 7x the combined price! I countered with suitable offer, given my inconvenience and all, haven't heard back yet. Two more negs on their way, plus a second slap on the wrist from eBay.
I have found eBay are very cagey on the chat though - they won't let on what they've sanctioned him with, citing 'member confidentiality' - I suppose good in one way, but I was keen to make sure they actually back up their 'we don't condone this sort of behaviour' approach. eBay chap then proceeded to offer me his phone number, to 'work it out amicably'... I declined. FFS