There is a $100.00 core deposit in addition to the sell price of this unit. EXHANGE IS REQUIRED, WE WOULD MUCH RATHER RECEIVE YOUR CORE THAN KEEP YOUR $100.00. Once you've completed the buy it now process for this transaction, we will send you a paypal invoice for an additional $100.00 core deposit. You may opt to send your core in first. We will not ship this item until we either receive a $100.00 core deposit or the core from you. Because this is a special item, some lead time may be required.