I went to price a job up today - £82, the young Asian gentleman with a Ferrari parked on his drive was haggling away, first he wanted it for £70, then £75 but I didn't budge. In the end he said "ok then £80", to which I corrected him "£82" - he said "I can't believe you're bothered over the "£2" to which I said "it doesn't appear to be me that's bothered about the £2"
Other classic examples I get is when I say for instance say £95 and they say £90 and that "it's only a fiver difference" to which I answer "ok, we'll make it £100 then, only a fiver difference" they soon stop haggling once the price starts going up.