Although I don't know the absolute prices, its that which bugs me most about both these models as I don't think they offer value for money.Having said that it has been shown by Westerner and Barry Ten they can be made better.Potential purchases by me will wait as I have four other loco purchases before I add these.
That Royal Mail King edition was originally £140 I think.
Checking the numbers of the ones mainly used for banking at NA shews mainly 51xx series locos used.