All prices include your old battery as a core but DO NOT include taxes. If you do not have your old battery as an exchange at the time of purchase, you will be charged a core charge on top of the price of the battery, plus the taxes. The core charges fluctuate from month to month, according to the lead market at the time. Core charges are also refundable if you return your old battery along with your receipt that you received at the time of purchase. WE Buy Junk Batteries come in today.