Thanks for posting this, but its the same old;
If something is too good to be true, it probably isn't and on a forum don't deal with anyone that is a one poster or doesnt follow the rules
Do a google search of the picture or next level is get them to DM you a picture taken that day and look at the metadata, it may tell you the date and time if it isnt stripped out.
Finally use paypal or a service that guarantees refunds and log everything.
I have never had a problem here, bought a few items from posters who have history and the scammers usually all follow the same script.