£5,000 an inch

I've been comparing large executive and luxury cars and I can't get my head around this:

Audi A6 4.93m long from £24,700
Audi A8 5.06m long from £49,800

BMW 5-Series 4.84m long from £27,400
BMW 7-Series 5.07m long from £53,700

You get the same differences between a Lexus GS and an LS and a Mercedes E and S-Class.

So an extra 5-inches costs £25,000. £5,000 an inch. What do you get for your money? All these cars are so high performance you can't legally enjoy any difference. You get a bit extra boot for the money. Also the big boys are even more refined with NO tyre noise. The big guys are more costly to run but I doubt it matters if you've this kind of money. But £25,000 extra.

It must be prestige. The people who run 6s, 5s, GSs and Es have to get them signed off by the board. The boys on the board sign their own cheques.

Regards
Ralph