IMO I've definitely got my moneys worth out of my Kinesis Racelight GF (and long may it continue) in the three year I've had it (come the end of July); its done 15,688 miles (about 0.1p per mile). I'm less sure about the Bianchi 928 (5316mile in 5 years, 0.3p per mile) but I wouldn't be without it. My other bikes have been well below the OP level but I reckon I've got my money worth out of them; circa 10,000 road miles out of the sirrus (0.05p per mile)(its now on the turbo), the Ridgeback Velocity has seen 8,777 miles (0.03p per mile). My latest purchase has only seen 371 miles (its just under a month old), from a quick calculation at 0.5p per mile its looking good VfM so far but I do wonder how much it (a 13kg SS) is going to be used up north (all but 8 miles of the 371 have been done down south).