MMC 30-Day Money-back Guarantee If for any reason you are not satisfied with your purchase, just return it to MMC within 30 days of the date of original invoice for a refund (the original purchase price minus any applicable restocking fee (shipping charges are non-refundable)). At MMC's discretion, there is an industry standard 15% restocking fee on any returned product. See MMC REFUND POLICY. An RMA# number is required for all returned items.