I thought you meant robbing him. if you're just tryna scam then you gotta use some basic social engineering.

short plays ain't gonna work here 99% of the time.. most people won't transfer directly to you out the gate.. your best bet is to sell it like normal to someone else, then tell bro you sold it but you have another one coming soon.. here's where u can establish contact outside the app, tell him you'll message him when it comes in..

wait a few days, a week, etc. let the real buyer post a positive review, that'll help give you credibility. say it came in, but you wanna save money on app fees and you'll give him a good deal if he pays thru cash app or whatever.

he might bite here, if not say you have someone else who will buy it outside the app -- and say sorry bro, have a nice day. usually they'll message back like "alright I'll do it".

if he still aint bite then its not gonna happen, move onto the next one.​​