how does bid ask spread work 
in financial markets a bid ask spread is the difference between the asking price and the bidding price of a security or other asset the bid ask spread is the difference between the highest price a buyer will offer the bid price and the lowest price a seller will accept the ask price typically an asset with a narrow bid ask spread will have high demand by contrast assets with a wide bid ask spread may have a low volume of demand therefore influencing wider discrepancies in its price 