Looking at the sold cars I think the prices are holding up well, or rather I'd hoped they migth be a bit cheaper!
4.2 granturismo for £20k, 998 mini cooper for £18k, 2.5 boxster for £5.5k etc.
These aren't high prices but they aren't fire sale low either. Lots sold too, far more than the last auction I looked at a week or so ago.