Ebay to send classifieds articles directly to next buyer?

Can I send items that I buy from one dealer and sell to another directly from the seller to the buyer without going to me? Example: I buy an xbox game for 10 euro 100km away from me and sell it for 20 to a buyer who lives 50km away. Now I give the seller (100km away) the delivery address of the buyer (50km away). The financial goes through PayPal.

I would refuse to accept the shipment from an unknown sender

Walking is okay, but it's your risk. You're selling a product that you don't know. If you get a complaint, you are responsible without knowing whether the buyer or seller is telling the truth. The same applies to the (supposedly) not received delivery.
Given how often there are problems with eBay classifieds, I wouldn't do it that way.

What if I tell the buyer that his package will come from this address?

That would be very suspicious to me and would not buy 🤷♂️

This contradicts the PayPal rules - the seller may only send to the address of the buyer stored with PayPal

If I say the package comes from the address without him even knowing that it is not my address, he is unlikely to find it strange

Normally you don't give the buyer the address of yourself. The buyer only gets the payment details from the seller. (classifieds on Ebay)

PayPal is not child's play!
You are a minor and are not allowed to use PayPal at all!

PayPal is generally only allowed from the age of 18 without exception!

Have you cheated an illegal PayPal account with a fake date of birth and want to do illegal business?
There will be considerable consequences for you - and that's a good thing.

The underage questioner is violating the PayPal rules anyway…

The underage questioner is not allowed to use PayPal at all anyway.

So a question - besides the fact that you are not even allowed to use PayPal - who would buy a game from you if they can get it for 10 euro cheaper from someone else? Everyone would buy the cheaper product and avoid you. Something like this only makes sense with dropshipping, if the product would come from elsewhere.

It gets funny if he wants to send it back and it's not the same address. Kid - go back to the sandpit. Nothing happens to you there.

You don't need to be offensive right away, I thought the people here wanted to seriously help you and not just insult you. And I've seen much worse questions.

Who Says I'm Underage? I'm 19 XD

There's no support here for children who want to try illegal things!

Ah yes? 100 days ago you were supposedly 15 - you're making a troll journey through time, right

My brother and I share an account you genius. And just for information, my 12 year old brother also has access to this account. So don't be surprised if "I" am 12 tomorrow. XD

But you already know that this is not allowed at all?