Mariner9
On the specific issue of should they charge this amount I dont think it is that simple.
Of course they can charge what they like.
However there are many businesses that take an alternative stance by recognising that even in a capatilist economy there are other factors at work.
For example I have started a thread on the question of whether airports should charge for go arounds. Of course they can, but some might argue they have a responsibility to encourage pilots to conduct themselves safely.
In the case of Goodwood there are many of us who visit them frequently. We might like to believe we are good regular customer who contribute to their airfield income throughout the year. We might also like to think that as good customers the owners would not always want to charge the most they could simply because they can but would recognise that we are part of a small community.
Imagine what the LTA could charge for centre court tickets on finals day if they simply took the view that the tickets should be priced on the basis of what the market will stand - no they are to be commended for recognising that there is a community of tennis players that supports the LTA throughout the year and rightly the tickets should be made available to that community through the clubs at a reasonable price rather than on the basis of who is prepared to pay the most.