All our keychains have free shipping within the USA with tracking and come with a back. These are part of a large collection of thousands of keychains. We will be adding more each day over the next few months. Please check back as we add more. Reach out if looking for a specific keychain and we can create a new listing for you if we have it. Also due to having multiple quantities of some keychains there could be minor differences when compared to the photo. Please ask any questions and we will do our best to answer them.