It is hard to be certain, but I'd say that the bloke's assertion that
they had had an offer of 500k was a simple lie. Surely no-one was
surprised when it turned out they had "turned this offer down".

One reason I draw this conclusion is that we have already seen on the
"Justine and Colleen Million Pound Property Experiment" that there is
a stamp duty discontinuity in pricing around there. If the blustering
oaf had claimed to have had an offer at "a penny under 500k" it would
have been more plausible, but as he was keeping all the figures in his
head maybe that 1p got lost in the wide open spaces in there. This
issue means they are also insane to hold out for higher offer as the
next price range is around 575k.

I was intrigued by the nasal strangulated voice of the red-haired
harridan - was she English ?

Many Thanks,

Ted Woodley