1. Leon sandals size 41, worn once, size didn't fit - 3000 dinars (new 4300).
2. Memphis men's size 43, worn a couple of times, also the size didn't fit - 1500 dinars (new 4000 dinars).
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.