My uncle used to source cars in Scotland and sell them in the South East on a regular basis; it seemed that certain cars had bigger price differentials than others.

There simply might not be that much demand for a relatively expensive Honda in Glasgow.

Or it might be that the car is a dog. I'd get the salesman to go out to the car and descibe it to me in considerable detail - scuffs, state of the interior etc before I booked the ticket.

I used a website called allapprovedcars.co.uk (which at the time only covered main dealers - it seems to have been renamed and include other dealers now) and set up an alert on new cars matching my spec being uploaded. As a result, the website told me of a suitable car up in Derby and I was the first to see it (despite living 200 miles away). I bought it within 12 hours of it going up on the website and got a bargain.

This report in the DT last weekend may explain the uneven distribution/popularity of Jazzes:

"The Jazz has established itself in the supermini sector, but owners have an average age of 65 years and an average annual income of £34,465 compared with 55 years and £36,458 for the segment. In other words, a fair proportion of Jazz owners are pensioners and, according to the Office for National Statistics, in 2008-09 fewer than 15 per cent of pensionable couples had an income in excess of £30,000; Jazz owners are some of Britain’s wealthiest wrinklies"