@OP, how about this. I put $10 in escrow to be released to you ( escrow fees paid by you) when cabalism13 confirms his phone was found. If not found within 7 days funds are returned to me.
That makes a 40$ offer for you to do the work... I can give you a week for telling where it is, and if I really found it I will add another 10 Bucks. To make it 50.
You don't have to worry for I'm a legit person here. Even if I don't use an escrow, funds will be sent to you once you have done the work.
P.S. I already told you, I really don't expect much because I already tried it myself. So just put it on a try, and maybe this thing can be your career. (Once I confirmed that you have just stated a location found by google by using the last seen active by one of my accounts, this offer will be automatically rejected and I assume this one is fake)
He's just begging. An escrow deal would have paid him if he was able to do the work and he knows this. He knows he won't be able to complete it and wants to scam users out of $10. If it's "only $10" then I can say the same to him.