Thanks very much for the interesting input re Towcester, Aragorn and Grey. Will mull that over some more, because if it really was a perfect working model, all courses would be following suit!
Re bookies: I inquired from lovely Vicki Steadman, our NJPC manager this evening at Brighton, and no, their own software is only for fractions. However, she said about five got some special decimalised software installed for the Ascot experiment, which worked with 'mixed results'. Overall, she didn't think it seemed to have met any particular need, so one feels it's a question of 'if it ain't broke, don't fix it'.
Re Towcester: bookies pay five times the amount of a course's entrance fee, so I'm not sure how five times nothing works! Presumably, as you say, Grey, it's a deal they work out. At Lingfield, the price is £85 per pitch & fee for the AW, £95 for turf and NH meetings. I can hardly believe those bookie numbers, though - I've never had more than 13 (Tatts and Rails) at Lingfield to date for regular meets! Might have up to 24 for the Oaks Trials, but that'll be about it. 380 (granted a total attendance) for what, 22 meetings? That seems quite a lot, but of course if they get in good crowds, then they need to have them there to feed off them.
Okay, still not quite seeing the whole picture: most courses have around £20m in Third Party Insurance, they have to buy bedding (usually a choice of shavings or paper), they have to have a minimum amount of BHA officials onsite - stables security x 2 (the guy with the microchip wand), stewards, weighing-room security (not a hired hand, but a BHA-endorsed chap with an RCA badge), the judge, the Clerk of the Scales, the stewards, then the vet/s, and at least one doctor, hire in St John Ambulance and/or local paramedics, two ambulances, and then a number of people who have to provide safety and security presence to meet licensing laws. One security person per 1,000, I think (that's H&S legislation, the same for sports stadia, not the BHA's requirement), who has to be SIA badged. You must provide a dope box with a dope witness and a dope vet who isn't the vet who charges round the course following the horses. You have to have the dope catcher, the guy who walks the horse back for dope testing. You have to provide staff outside and inside the weighing room door, and outside any jockey door if it's separate. There are just a number of people who cannot just rock up on the day or not - they have to be in place under BHA requirements. Then a starter, starter's assistant, recall flagman, and attendants around the course with/without flags. The equine ambulance (hired), the knacker van (hired)... there's a very long list of requirements and they all cost money to provide. How the heck the course manages to do this and also maintain its buildings and grounds is amazing.