2007 F430 Spider

1. Comparable market$237K

   47 of the same trim advertised at around 17,254 mi.

2. Mileage+127.9%$540K

   468 mi against 17,254 mi, the mileage the cars it is priced against carry. This cohort gives up 28.6% of its value each time the odometer doubles. That curve was read off cars between 2,274 mi and 40,285 mi, and nothing has been observed beyond it, so the mark is struck at 1,137 mi rather than carried out to this reading. Confidence is low until a car near this odometer is advertised.

3. Model year-1.7%$531K

   A 2007 against a cohort centred on 2007.

47 cars, model years 2004–2009, asking prices spread ±14%.

Struck from advertised cars and adjusted to this one. Indicative only.