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.
MS Energy M10 electric scooter. Used for 1.5 years, mileage 2167 kilometers. Range on a single charge is about 25 kilometers (depending on speed and your weight). Maximum speed 25 km/h. Good condition, there are traces of use, see the photos. Charger included. Pick-up from New Belgrade. Price 140 euros.
Kids' bike Booster Plasma 200. For children aged 6-9. We bought it for the child to learn to ride, and it did a great job. 6 speeds, 20' wheels, rim brakes. I will help the buyer with delivery to the address.