You will see a lot of advertising by major window companies for 50% off or Buy one Get one for home replacement windows. However, consider that K and K Classic Designs already has unbeatable pricing, windows are locally manufactured for the altitude, and our company has been locally owned and operating here for 25 years. You will be very surprised at the savings you will receive for a comparable window, great customer service and installation. Call Ken at 303-973-1507 for a quote on your windows and siding needs. http://kandkklassicdesigns.com. Thank you.