No it does not. I'm not really sure so I guess you would just have to trust me since I barely even use the account
then that makes it a risky deal then.
its not risky as long as you use escrow
maybe you can post your runescape account stats?
It is still risky for the steam account and battle.net account. It is possible for the owner to retrieve the account through customer support if they claim and provide "proof" that the account was hacked or stolen in some way.
I am not sure about the runescape account though, never played.