I was assuming from the little response that either folks who went last year haven’t bothered this cuz the price has gone through the roof,well in actual fact the cost for Friday has doubled,never mind who’s winning,and then on top of that they want to charge for parking.
It's the usual sting for cars (£10 last time I looked - now £15), but motorbikes are free. Push bikes are free of course, which what I'd normally go on, just to avoid the crush and the long long walk around the circuit.
Friday with the Sprint Race would be a quick hit of fun but, as you hint, £55 really is taking the mickey.
You get a whole BSB weekend ticket for that, and still have enough spare for a couple of pints. It's not a GP but it's defo entertaining.