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.
Since it is the most strong and nice looking exterior paint, we agreed with our boss to use it all over the exterior walls to make sure the project is ready for any condition, this will last for over ten years with out renovations, deal with us for such wonderful paint works