Real estate polls show a stand-by generator to add an average of 5% to the sellable value to your property. So, if the average "whole home" system is about $14,000 (turn-key, well equipped), and the raw value of your home is $329,000... then by the industry numbers $329K @ 5% = $16,450 you just made money putting a system on your home. Now, a piece of equipment or money in a standard savings account won't yield you much. But the rate of inflation of real-estate (which your generator is now tied to) at an 4.24% average, your money is not lost, it's just reinvested. Not only is it reinvested into the most solid investment that you have (your property), it's also protecting your family and your investment from freezing pipes, or even a fire if you're on a well. It's keeping your family safe and off the roads with all life's amenities that you're used to. Are they worth it? I can tell you I feel safer and protected knowing everyone in my family has one....