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 shoes with a small heel. Natural leather inside and out. Size 38 (will fit 37.5). Worn 1 time. They are a little tight for me. Bought in Belgrade for 7 thousand din. Selling for 5 thousand din. Dorchol
