Quesiton about kbb~~~?

i am just wondering why the kbb's used car value on a 07 328i with the same options and has have 10000 mile already is equal to a new 2008 328i ......then what is the point to buy a used while you can buy a new.......|||Kbb is a commercialized website that sells advertising to generate revenue. Their values do not reflect actual market place prices, so if you want real number, you would have to do comparisons of actual vehicles. Good luck.|||this is a mistery, some cars instantly go up in value e.g pre ordered ferraris and the like, but this 328i i have no idea why it didnt depreciate like a rock off a cliff..........