Ebay scammers on Nintendo Switch offer?

I posted a large Nintendo Switch bundle on Ebay yesterday. Auction: 250 euro Opening bid, Buy It Now: 450 euro. Now a somewhat strange Ebayer has contacted me: First he wanted to know how much shipping via DHL to Great Britain costs, I answered that normally. This is now his second message:

I'm a little surprised because he wants to pay the 450 euro so quickly, also a little suspicious because of the international shipping, the 0 reviews and because he doesn't just want to pay via PayPal… Could this be a fraud?

Also a bit suspicious… Because he doesn't just want to pay via PayPal

I do not understand that. Paypal is the most insecure thing for you. Apparently you haven't read their terms and conditions.

Otherwise: As long as he actually transfers the money and it arrives in your account, there's nothing strange about the deal. But you can be sure that the alleged bank will ask you for a shipping confirmation. In that case: cancel contact.

Ok, I'll do it like that, thanks.