[моё] Seller from Avito

Yes, nothing surprising, these kinds of cases happen, you can't help it, but surprisingly, they are rare.

And what’s with his vocabulary? Judging by the name, you wouldn’t think he’s not fully Russian, but the words don’t quite fit together in the review. It’s not that I pay much attention to that, but especially in all sorts of trades, that’s a pretty triggering red flag for me. 

They all “don’t notice anything,” “don’t use it,” and “don’t know anything.” That’s exactly the kind of thing that usually gets sold or resold in clearly used condition. I usually don’t like buying more complex hardware this way because of cases like this. Something simpler — speakers, for example — that’s better stats)

It’s not even about the vocabulary here, but that he’s a fucking liar )
and has no clue what punctuation marks are

The purpose of his review is false vindication.
You see, I warned him, and yet he was so bad as to dare leave a negative review.

Before buying on Avito, I always “pester” the seller with a bunch of questions about the item. That way, unreasonable people are weeded out, and if everything goes well, I leave a good review.