Visit store.Apple.com to view prices for the iPhone 6 and the iPhone 6 Plus. Click on iPhone 6, and select model, finish, carrier and storage size to view the different prices. As of March 2015, Apple has not released the iPhone 6s.
CNET.com lists comparative prices of iPhone6 models with different carriers. Search for iPhone6 on CNET.com to find comparative costs of iPhone 6 models by storage size and color available from other stores or directly from Apple. CNET.com lists the different carriers and retailers selling each model, together with any special promotions, current availability and prices. Search for the iPhone 6 on the "Reviews" section of CNET.com to compare consumer reviews of each phone.