How accurae is KBB and NADA for pricing?

[rrich49132]

I need some help. I am looking at a very nice and maintained 2003 x5 4.4 with 93K miles. The car has been for sale on Craigslist for about a month now and asking 16K. When I go to KBB I get $14,500 and NADA I get $13,200. The reason why I am asking is I have a Mercedes CLK430 and I put mine up for sale this past summer for KBB average price in good condition and did not get email and went to a Mercedes forum and they said the cars don't at all at the KBB prices as they tend to be high.

What do you all think a fair price is for this car in good condition?