We are the largest distributor of portable oxygen concentrators in the world. We have easy financing terms and can offer instant approval over the phone W.A.C. As the preferred distributor of the most trusted names in the business, we received preferred pricing that we can pass on to our customers. We are so sure that our prices are the lowest around that we offer a low price guarantee. If you see a lower price from an authorized distributor, we will not only meet it, we'll beat it by up to $200. Visit us on the web at oxygenconcentrators4less.com or call 888-370-0599 to speak to one our respiratory specialists.