what is the benefit of recycle ?

http://www.apple.com/recycling/ipod-cell-phone/

The Apple Recycling Program is part of Apple’s commitment to minimizing the impact our products have on the environment. It offers you a way to dispose of your electronic equipment responsibly.

By participating in the Apple Recycling Program you are helping the environment by extending the useful life of products that have value in the secondary electronics market. You are also ensuring that products that have reached the end of their useful life are recycled in an environmentally responsible manner in North America.

EmanJan wrote:

what is the benefit of recycle ?

It's good for the environment.

caa I send you may iphone and you recycly it for me?

You can send it to me, but I'm not sure why you'd want to send your property to some stranger on the internet.

abd how much it will cost?

Check with UPS, FedEx, or DHL.

Seriously, you are not communicating with anyone affiliated with Apple. We are all owners and users of Apple products - that's it. Check the link offered by Allan Sampson. It has all the information you need to know.