To put that fee in perspective, we can rent a track like Blyton Park (noise limit we can pass...) for the whole day 9-5 for £3k. That's fully staffed, just us using it. Personally, I think it's just as easy to pay a commercial outfit per driver when they are running a track day anyway. I've been approached in the past by the Aston Martin Club and one of the Porsche Clubs to join with them in a 50:50 split on renting a track for exclusive use - the idea being that they didn't want to share the track with all-comers in stripped out £500 Clios, but would be happy to have the gentlemen Maserati drivers there with cars similarly valuable to their own.
I've told them that when we find some gentlemen, I'll get back to them
Thinking hats on then - if people are serious and want to do a track day, I will organise one. There wasn't much interest though earlier in the year when I suggested it.