The proverb “a bargain is a bargain” is an old saying that emphasizes the importance of keeping promises and honoring agreements. It suggests that when two parties enter into an agreement, they should keep their word and respect the terms of the agreement. This proverb also implies that when a deal is made, it should not be reneged on, and both parties should do their best to honor the agreement. The proverb can also be used to remind people that it is important to be honest and dependable in any agreement or deal.