Whats it worth?

[straight5]

Hello folks. Wanting to get some advice on how much to put my car up for, and idly fishing for any possible interest.
Starting to weigh up spending money on my car for another year versus moving it on.
Also wondered what the numberplate does for its price / attractiveness.

Its a silver 2001 S60 T5 with black leather interior and manual gearbox
Pros and Cons;

CONS
It will soon need 4 new tyres,
Its on 182k miles
Has a tiny but regular oil drip.
Smells of petrol when running.
Also after starting from cold sometimes it needs revving for first 20 seconds to stop it stalling.
Occasional Engine System Service Warning message. Goes away on its own and there is no discernible effect on the engine performance.
bodywork a bit scratched but reasonable for 13 years old.

On the plus side;

Numberplate S60 ACA
Pulls hard in all gears
recent brake disks
solid gearbox and clutch. no issues whatsoever
only 230 tax as pre march 2001
Interior smart - good condition black leather
has the spaceball gear lever like an s60r although 5 speed.
All electrics work.

SO what should I put it up for?

[claymore]

probably about £600, I've had no interest in my 2.4t with no faults at £700