Go ahead and price out your attic insulation project at the big box stores, and then contact Energy Monster and watch their price come in lower. They can buy in bulk and get reduced prices, which means your price quote will be lower than doing it yourself. Also, their high volume machine blows the insulation in faster than a hurricane! I hired them to insulate over the garage, and total time was approximately 25 minutes. Courteous professional installers. Wonderful customer service in their office. And I never had to break a sweat! Energy Monster is top-notch!