If I were to even think about selling the Multi, what sort of price are second hand ones going for now?
Do they depreciate a lot or are they still a sort-after car?

Being a 6 seater they tend to hold their value quite well (diesels more so)....however if you want to sell it very cheap I might be interested

Har har!!
No i'm just wondering because my brother just sold his (we had identical beasts) and it sold in one day of the notice being put on the window.
I didn't ask how much he got for it.

looking for a multi for parents in law at the mo and diesels are going for a lot higher price than petrol models

you can pick up early petrol models for about 3 grand,
diesels are going for about 4 grand or more even though they generally have a much higher millage