Why not just get an OMM to facilitate the sale? It would be far more appealing to a potential buyer, than for them to have to trust you to legitimately hand over full access once you deem the the LoL code 'valid'.
My very old account. I would love to sell it for 35euro LoL rp prepaid card. If you are intrested you can call me through skype and using screen share i will show you anything you need. I will give full access after i see that the code is valid. And when i say full access i mean i change the email to yours and it will be yours forever :3
P.S. the account has 500 acs.
Why not just get an OMM to facilitate the sale? It would be far more appealing to a potential buyer, than for them to have to trust you to legitimately hand over full access once you deem the the LoL code 'valid'.