Why don't we just do what cable companies, Alarm companies, car companies, and phone companies do - "lease" our equipment to customers. they pay an ongoing monthly fee under a contract and the it gets replaced with new equipment at a set interval. ie $5K retail system = $500 down and $175/Month x 36. Offer buyout at end of term or start over.. Cheaper than cable!
I AM responsible for typographical errors! I have all the money I will ever need - unless i buy something..