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 - L’Occitane shampoo for dry hair, unused (didn't fit) - 700 dinars - Colored hair mask, unused, didn't fit - 500 dinars I'll give it all together for 1000 Center/Spens/Promenade Pickup/meeting at Spens