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 a work laptop, bought in Novi Sad with a semi-dead HDD, the disk was replaced with an SSD. For surfing and simple tasks. Charging cable included, OS installed Linux mint, I can wipe it completely, or install Windows 10. Selling because it's not needed, because I bought a desktop. 80 euros/equivalent in dinars. Pick up in Detelinara, more photos, spec...
