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: suitcase + cover as a gift. In excellent condition, has only been on two flights. The wheels, combination locks, fasteners and handles work perfectly. There are a few small scratches on the body. Size S