How much does the iPhone 13 Pro and the iPhone 11 Pro cost?

If you buy from Apple in the U.S., all of the prices are shown at iPhone - Apple

Note that the iPhone 11 is no longer sold but may still be available at Authorized Resellers.

You have asked about two iPhone models which have both been discontinued by Apple. You may find some limited stock at other authorized sellers, such as BestBuy or an authorized Carrier, but pricing is up to them.