That's a very cheap rate for a typical polish+scale dental session.
If you go to more posh dental clinics, you will pay much more.
Cheap dental clinics: half-fuck newly graduated dentists, many outlets, super high turnover rates, lousy equipment, crowded, closed on certain days.
Expensive dental clinics: just one experienced dentist, one outlet, dentist is the boss of the clinic, advanced equipment, one-on-one appointment with at most one more client waiting for you to finish, allow you to make emergency appointments if it's urgent.
Seriously, don't be gian png when it comes to dentists. You only have one set of teeth, you only visit the dentist at most twice a year if there are no problems. Many people found out the hard way, e.g. dentures don't fit, braces give problems, extract wrong tooth, infections etc.
Of course, my favourite dentist was my primary school in-house dentist. She always pressed her breasts against my forehead and commended me on my flawless teeth. I could smell her perfume and her sweat.