Dita is worn by many celebrities, so it is extremely popular. So Dita is a brand that is pretty hard to find. They keep it exclusive by offering their products to very few retailers. So it'll be pretty hard for you to find them on the Internet if you want to pay less for them, as they do shut down accounts that sell online.
You do see some online, but usually on stores website and usually they ask for you to call them to purchase, even then it will be retail prices.
Many celebrities such as Justin Beiber, P Diddy, Usher, Halle Berry, Lauren Hill, Britney Spears, Paris Hilton, Russell Brand, Lindsay Lohan and so many others wear this exclusive brand.
So get with the cool. Visit Ditas official website http://www.dita.com/