You might check with your home owner's or renter's insurance provider - you may already be covered against at least theft. I don't know much of anything about Mack but a lot of reputable places offer it.

According to their website, their policy must be purchased within 30 days of the equipment purchase. Also - "The contract does not cover products which have been misused, tampered with, modified or damaged as a result of accident, liquid, grit, impact, lack of proper care as indicated in the manual of operation by the manufacturer."