What is Bidding War?

Legal Definition
Bidding War is a card game typically involving two players. A radical variation of the classic game War, the result is not predetermined and a good player can win consistently.
Since the game does not require cards to be placed on a table, it can be played in a car or even while standing or walking, which makes it popular among travelers.
It uses a standard Anglo-American playing card deck.
-- Wikipedia
Legal Definition
When two or more interested parties keep increasing offers to be the new owner. Its fast paced and less analyzed than the usual. The seller benefits from this process greatly leading to buyers remorse.