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.
Nissin Speedlite Di622 Mark II for Canon. Power zoom 24-105mm. With a retractable diffuser and reflector. In very good condition, everything works perfectly. Illuminates evenly, diffuses softly (examples attached). Includes GP 2700 batteries with charger and original case.