What would you expect to get for your entry fee, Toobe? You pay £50 to go and watch football, and that's what you expect to see, isn't it? You get to see the races, that's it, for a basic entry fee! Plumpton includes a race card with the price of entry, but that's unusual.
There are standard prices and then discounted prices at all courses. You can get discounts by booking online, discounts for booking in advance, discounts for various group bookings, discounts if you're a student, an OAP, belong to the Racegoers Club (£3 off entry fees where applicable), or present any promotional vouchers at the turnstile that are relevant to the course and the day. Course entry fees range from £10 during the winter at many AW courses, to £15 and Bob's Your Uncle for premier course festivals. Race cards cost from £2.50 to £3.50 for Derby Day, for example (although you get a huge amount of information for that). So, as an example, if you booked in advance for Lingfield last February, you'd pay £8 (£10 less £2 for booking early).
I don't know what facilities you think you'd get for entry - the use of a loo, the use of the bars, the availability of the restaurant, the tv screens, the provision of the Tote, the bookies - but like any event you pay to see, whether it's the opera, a film, or a visit to the zoo - the right to enter is what you get, unless you pay for one of the special packages some courses offer. They cost an all-in fee which includes entrance, a race card, a Tote betting voucher, a drink, maybe a snack, and sometimes (if the course runs them) a behind-the-scenes visit around the course. Just logon to any course's website and they should detail their range of options.