"the __ Is Always Right", Used by Marshall Field

This page is the CodyCross answer for the clue below from Casino, Group 273, Puzzle 2 (Cutting the Deck).

Question is: "the __ Is Always Right", Used by Marshall Field

and the answer is: CUSTOMER

Word Meaning:

CUSTOMER — (obsolete) A habitual patron, regular purchaser, returning client; a person or company who has a custom of buying from a particular business.

Definitions from Wiktionary.

"The __ is always right", used by Marshall Field — CodyCross Answer | CodyCross Solutions