14060/M prices from UK sellers advice please

[JB7]

Firstly, apologies I'm talking UK currency but it's relevant to me at this time, because the duty on US deliveries will blow out any savings, but have some questions for you good people..

I've never seen a watch sold at so many different prices, from a W 1996 at £3500 to a V £2009 at £3000.
And a few more, a 2006 at £4250 because it's an M, and a 2008 at £4500, because it's a 4 liner.

Am guessing that not all 'M's are 4 liners, which is what I thought initially, but only the 4 liners are the chronometers? Is that kind of right, and are those prices I quoted the norm or is £4500 too much for that one?

I know we aren't supposed to talk prices, but I'm not mentioning any dealers, and none are on these forums, these are all from elsewhere and all UK priced dealers. Would love some input from the knowledgeable on here please as to what they think is correct.

Much as I love the 'C' which is still RRP £5000, I don't know if I can get past that squareness, It's supposed to be a more comfortable alternative to my PO but it's like a box on your wrist, as pretty as it is. And despite it's 40mm against the 42mm of my PO, because of it's design it doesn't feel smaller at all. Price is not a great saving on older one either, compared to the C, in many cases of these ones I've seen