I think we should step back and think about if one of you were the seller.
If I made a mistake in my listing price I would hope that the buyer would understand and not try and take advantage of the situation. Talking about Karma. I just hope the same thing would not happen to you. It is one thing to get something cheap and feel good about it but this is pretty close to being robbery.
Sorry, but I would tell the guy to relist them and then try my luck or at least offer to buy them at a price you are comfortable with.
Just my 2 cents.
i can see you'r point , but not paying is just as bad as refusing to sell . i don't think i'll leave him poor feedback but still think he should of honoured it......
i sold a tcr slotcar set on ebay last year and it made 99p , it should of made atleast 20-25 pound but i just gritted my teeth and posted it 2nd class lol .