How do I sell a Battle.net account?

So im getting tired of the hobby of gaming so I'm looking to sell my BNET account. I have several games. Diablo 2 and the expansion, WC3 and its expansion, SC1 and its expansion. SC2, WoW with all expansions a level 81 DK and a 67 mage. Can anyone tell me how to make a legitimate transaction that is secure and me and the other party can trust eachother?