The Grand Prix is a "niche", "luxury", product.
Market forces therefore dictate that you will have to spend significant money to attend. Anything from 250-1000 per skull as the corporate entertainment chaps so nicely put it.
Last year, I took the Amex package to the Vale Complex with Helicopter transfer and had a great time. Cost 1200. Excellent 15 min flight both ways, plenty of good food, good company and world class sport.
11 hours entertainment equals 109 per hour.
Well, I'll be.........!!
That seems to be a remarkably similar cost to something else we all do.......