Butcher Margin of Error

WHAT IS THE "BUTCHER MARGIN OF ERROR" ?

Prime Meat Market adds a 10% "Butcher Margin of Error" provisional surcharge to all its products.  What does this mean? It means we try our best never to deviate more than 10% from the weight advertised, but our meats are hand cut and no two pieces are the same. Therefore, we authorize a customer's credit card up to 10% more than the listed price. Products are priced by the pound, and you will be charged for the actual weight shipped. YOU WILL NEVER BE CHARGED MORE THAN YOUR INVOICE TOTAL.