SELLER WARRANTS ONLY THAT ALL UNITS AND/OR PARTS ARE IN GOOD WORKING ORDER. WITHIN 30 DAYS OF RECEIPT BY PURCHASER OR ACCEPTANCE BY MANUFACTURER MAINTENANCE ORGANIZATION WHICHEVER ARE EARLIER, NON-WORKING UNITS AND/OR PARTS WILL BE REPLACED BY SELLER EXCEPT FOR MISHANDLING, TAMPERING, AND/OR FREIGHT DAMAGE. WORKING RETURNS ARE ACCEPTED AT SELLERS SOLE DISCRETION AND WILL BE SUBJECT TO NO LESS THAN A 25% RESTOCKING FEE MINIMUM $10.