In our Free Exchange Program, we take your own printer as a trade-in and in return provide you with the HP M880z Enterprise MFP absolutely free of cost as explained above. This is the value you will be receiving in exchange of your old printer. If you sign up for our MPS proposal, we can obtain the commercial value of your old printer and discount the purchase price of your new printer. The value depends on brand, model, age, and number of pages printed.