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.
For sale: 1. Munchkin Apocalypse (perfect condition) -1500 2. Sadhu nail board (10mm step) + stand - 3000 (negotiable) 3. Ikea beige table lamp with light bulb (warm light) - 500 4. I'll just give the basket away Center