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.
1) With you at home (new) - 500 rsd 2) Lines and mazes - 700 rsd each 3) Walkers and wanderers - 300 4) Where the sparrow had dinner - 200 5) We draw with our fingers - 200 6) 2 coloring books - 100 for both (several pages are chirped) 7) stickers in rolls - all for 200