it's a high class restaurant.. And some customer might not like it if the waitress mention the pricing, because it kinda create the impression of raising doubt about the customer's ability to pay for the dish and make him lose face.
It is on the onus of the customer to inquire about pricing at "very high class restaurants".
Say, CEO of A company bring CEO of B company to dinner. When CEO A ask for recommendation or makes an order, the waitress reply "Sir, this costs $120, it is ok? This cost $1000, is it ok? This costs....." "Shut Up, you tink I cannot afford it isit?????!!!!! Ask you manager here!!!!! "
If wanna go to super high class restaurant, be prepared to ask, or prepare to pay..