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.
For sale: MS-energy e10 scooter. Reliable and sturdy. Used only in summer, stored indoors in winter. Reliable and sturdy with good shock absorbers, two disc brakes and high speed, up to 29 km/h. I can give away a spare wheel, helmet and lock. There is also a charger and the necessary keys.
I'll give away 2 constructors for fruits. The excavator is assembled, without instructions. There are instructions for the car. Salajka, 10 minutes from the train station or by agreement.