I want to sell an article on the internet. How can I protect myself from fraud?

I have set up a notebook for sale on e-bay classified ads. Got a request and should send the article to London. If I send the package until I have the money (on the paypal account), am I on the safe side? It seems to me something strange…

In addition, I would of course insure the package (up to 1000 euro)

What would then cost the package, shipping and insurance?

Can you give me any other tips?

Let the money transfer! If he pays by Paypal, he has the opportunity to start a conflict and get back money

No!

No one from England buys laptops at German Ebay Classifieds. I guess he also offered a very good price? This is an ancient scam. There are e.g. Tapped Paypal accounts used or worked with fake bank emails.

ALWAYS only personally hand over and pay in cash at Ebay classifieds.

Thanks alot!

And should send the article to London

Yeah, there are no used laptops in London.

It seems to me something strange…

That's not strange, but a still well-working scam. But you have already received enough answers to this topic.