Don't get me wrong, it's a very, very tidy car but it's not worth 2½ times the book value!
For that money, you could get a decent facelift!
I sold my 2000 registered facelift 2.5 CDX Estate back in July.
Before it went I did front struts, wishbones, droplinks, 4 new boots, new windscreen, air-con, and WIM.
Before I got it, it had....DIS pack, plug leads, plugs, cam gaskets, discs front/rear, pads front/rear, a few other bits of crap and shed loads of receipts for work all done at Vx main dealer.
Flaky paint on front & rear bumpers, but otherwise immaculate (the pics should still be here somewhere)
2 owners from new, full service history...and I let it go for £1000.
The MIG is nowhere near rare enough at this moment in time to start commanding money, and it won't reach that status for a good few years IMO.