Shoreham auctions is another ex mobility car trade only seller
One of many
This guys firm will bid/buy a chosen car for you from the auction and deliver it for a competitive fee
Or go along yourself and buy a car thats open to public buyers
Shoeham have a great reputation very detailed/photo descriptions competitive fees ( better than most) and will wash and fully charge all EVs sold
Or simply look at the link and see the price that cars are actually brought for
Example