Is it normal for dentists to charge extra fee's for basic services?

all i had done was a really minor filling repair and i was out of there in 20 minutes but was shocked when i saw the bill at front desk like $400 dollars , the filling itself was only $280 but they charged me a $125 examination fee

all dentist did to justify that fee was briefly look at filling prior to doing the filling , never did x rays or spent much time looking at it

it seems like a scam really , like a $ 100 fee to look at the tooth briefly prior to doing actual filling

Is it normal for dentists to charge extra fee's for basic services?
Post Opinion