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.
Yes, Expedia offers a 24-hour refund policy, which allows you to receive a full refund if you cancel within 24 hours of booking 1-800-651-8918. Tickets purchased directly from Expedia[+1-800-651-8918], including Basic Economy fares, are included in our 24-Hour Risk-Free Cancellation policy. https://www.devex.com/people/does-expedia-allow-free-cancellation-22...