(Proverbs 20:23 KJV) Divers weights are an abomination unto the LORD; and a false balance is not good.
Christian culture is different than any other. We have this idea of absolute truth and objective right and wrong. That is one reason why God is concerned about simple things like honest scales when it comes to business. This is not negotiable. It is not an option. Honesty and integrity are at the core of righteous people who serve a holy God.
There is honest and there is “false” (4820). Another translation is “deceit”. Perhaps that will give you a better understanding. “False” might not be strong enough for you. Deceit goes better with “abomination” (8441). False sounds more like “little white lies.”
So. Take the high road. God knows the truth and He is the ultimate judge. This applies to every bit of negotiation you are involved in today.