statistics on miles and actual prices for F430 Spider

Some unpretentious figures :
This is a list and statistics on miles and prices only for F430 spider actually for sale:
Being in the process of buying one of this beasts I tried to understand the market.
These figures are only valid for statistics. All the cars are different; some are sold by dealers some by a private party. 95% have electrical Daytona seats. Some have cf some don’t etc.. But I think that this is a good base for trading and gives a general survey of the actual market .
I did not put in the sample cars with a lot of non-Ferraris options because they are not reflecting the market IMO.


Facts :
Black and Red represent 68% of the sample ( black being first with 35%).
Only one car for sale from 2004 ( no idea how much have been made in 2004?)
The highest mileage is 29K ( 2007)
The lowest mileage is 309 miles!! ( 2008)
2005 : 52% have more than 10Kmiles 10,52% have less than 5Kmiles
2006 : 52% have more than 10K miles 28% have less than 5K
2007 : 14% have more than 10K miles 34% have less than 5K
2008 : 10,7% have more than 10K miles 68% have less than 5K
2009 : 1 car has 5,7K miles 3 cars have less than 2K miles

F430 SPYDER FOR SALE :
2004 : 1
2005 : 19
2006 : 25
2007 : 50
2008 : 28
2009 : 4
Total : 127
AVERAGE
YEAR MILES PRICE
2004 9,3K 109,5 K
2005 11,43K 129K
2006 11,22K 149,4K
2007 7,5K 165,4K
2008 4,6K 185,1K
2009 2,6K 203,2K

On average you have to pay 20K more every year ( exception only 16k from 2006 to 2007)