Whats a Rolex Datejust worth?

[crostonian]

Due to the many variations in spec I'm struggling to come up with an asking price for my 16234 Datejust.

It's a 2005, Dark Blue dial with Index markers, White Metal Fluted Bezel, Oyster Bracelet, 36mm.

It was supplied new in the UK and has all boxes and papers, all that's missing is a spare link. It's in excellent but worn condition with no dents or scratches, it hasn't been serviced or cleaned.

I'm probably looking to px it but would also like to know what to ask for it in a private sale.

Thanks for any advice.

[DKL]

I'm no expert but 2-2.5 ish.
Dread to think what you'd get as px