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: 1️⃣ new Paşabahçe shot glasses, 6 pcs, in a box, 400 dinars 2️⃣ batter dispenser (convenient if you need to make a lot of identical cupcakes or accurately measure the volume), used 1 time, clean, working, 200 dinars 3️⃣ Aquaphor water filter jug, used, working, whole, but there are limescale marks from water on the lid. 400 dinars (I'll give it all...