Never pay down a deposit in a bank account until you have met the seller, seen signed a purchase agreement.
No serious private advertisers ask for a down payment before you meet.
Receiving an email with an in-scanned ID does not mean that you have identified the sender. You do this on the spot, when you sign a purchase agreement.
Selling Playstation 4 Fat, 500 Gb, first revision. Fully functional, cleaned of dust before sale, does not make noise. Chinese controller, with stick drift. Reason for sale: got another model for free. We use it, this one is idle. Price 100 € Adice or we will agree on another place.