It seems the engineer has given my car a 'market value' of £2500.

This being the reason for writing it off.
I can find two for sale, one being Professor Peach's (although he's taken a deposit now) at £7k and another which has no photos and suggest it's a 1998 pre-facelift at £8k.
What's the best way to tell them they're ignorant pen pushers and it's worth more than the £2,500? Just forward the adverts or something else?

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Cars...
'93 Audi Coupe 2.0 Alpine White (sold)
'99 Audi S4 Merlin Purple - K04 upgrade to 412hp (sold)
'00 Audi S8 Agate Grey (Sold

)
'11 Audi Q7 4.2tdi Unknown Red (Classic Red Pearl Effect - thanks MJ)