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.
Nike sneakers gray-beige with brown inserts size 38.5 (but they are apparently small, should be a good fit for 37.5). Almost new, worn once. Selling because they are still small, and the check was mistakenly thrown away. There is a box if needed
