buy and sell bitcoin is

LocalBitcoins allows people to exchange local currencies to Bitcoin and back effortlessly everywhere in the world

LEGIT Valuable currency exchange service that has been operational since 2012
Sellers and buyers of digital currency from around the world can register and register their bitcoins on this site.

You can use a variety of ways to pay for a payment on the local Bitcoin site:

Wire transfer
Westren Union
Payment by email