i am so sorry for your loss, some people are just so ****ty. similar thing actually happened to me just literally yesterday. i have had my iPhone x for sale on offerup and i met with a buyer in an apartment complex and he asked if i could drive him to an atm a couple of blocks away from the apartments. so i take him and when he got back in the car, he snatched and grabbed the phone and the box. i chased the thief back to his apartment complex and eventually found which apartment he was in. called the local police and he was cornered and was charged with robbery along with possession of marijuana. i did get my phone back, and learned my lesson. meet somewhere safe like the police station and take the money first.