The buyer is a scammer.
The buyer registered an account on eBay on March 31, 2023. On April 1, 2023, he made his first, rather expensive, purchase. Received the product on Tuesday, April 18 at 17:54. He opened the return request immediately afterwards, on the same day at 22.20. Didn't send any messages to report any issues.
In the return request he wrote "Hi, I think I received the wrong model, it is the right version. I would like to return the item.". His sentence is therefore contradictory, because in the end he says "it's the right version".
Also, the buyer registered a NON-EXISTENT phone number in his account.
Today I received the return from the buyer.
The buyer has returned a product that is different from the one that was shipped to him.
In fact, the product "Rocket Milano Faustino 3.1 Kaffeem?hle chrom Die Rocket Faustino 3.1 RG731M1A11" was sent to him, with the manufacturer code RG731M1A11, as evidenced by the code shown on the original sales package.
Instead, the buyer replaced the product in the package and instead of returning the same product with code RG731M1A11, he instead returned the product with code RG701A1A11 which is a different and much older product.