I currently own a Nikon F5, I paid something like $499 for an EX+ example from KEH. The camera looks virtually like new. It is actually my second F5; I purchased a brand new one from Adorama back in 1999 for around $2,250, I believe that there was a rebate at the time though. I've noticed that new F6's are listed on B&H's website, but for $2,499. That is pretty steep for me, considering what a nice F5 goes for these days. I've noticed that the price has actually gone up for the F6, in some of my 2007 editions of KEH's catalog, F6's in EX+ condition were selling for $1,299, now in 2009 I see them selling for $1,600 on eBay!! KEH rarely has one for sale on its website.
I also recently bought a Canon EOS-1V, and I downloaded the F6 brochure from Nikon's website, and it looks like the 1V is pretty near equal to the F6 in every way. The only thing that I could find better about the F6 is the fact that the 1V has a plastic back, while the F6 has an aluminum-alloy back. But the Canon 1V has DEP mode which I find very useful for my style of photography. So in the end they seem pretty equal.
For the type of photography (landscapes) that I do, both the F5 and 1V are overkill. But I really enjoy using nice camera's, so that is why I own what I own.