Yup, its much easier to go after motorist as the average joe needs the car to get around and has a paper trail to follow to get results.

This is why so many people abroad buying car parts get conned as stuff never turn up.

I got caught by a guy in Gloucester when I was over visiting my wife in America, ended up selling him some US car parts and posting them from America, he then offered me loads more parts so I paid for some parts to be delivered to my parents around 30mins from his where he would get the remainder money. Parts never turned up when they was supposed to, ended up googling the pictures he had sent me as I was sure I'd seen one of them before when I thought about it. He'd stolen pictures off audisrs and google so found out where those came from.

PayPal claim went in with pictures etc. Turns out this guy wasn't too bright as he'd used his sisters paypal account. She started sending me threatening emails and saying how I'd got it all wrong, he was the best of the best etc. Paypal put her account into the minus and refunded me much to her annoyance. I got lucky, in the end I was just out of a bit of time and some postage costs which wasn't too bad, could have been a lot worse.

Put warning ad's up on ebay saying the seller is a scammer, print screen copy of all. Get together all his info you can, put ad's warning about it on Facebook marketplace. Basically just cause him as much hassle as possible until you get a result, same with the banks - contact them again and keep contacting until they know you won't go away. Worth a shot and they will probably say you shouldn't have used bank transfer but at the same time its supposed to be a safe way to transfer money.