It is ultimately up to the buyer to avoid fraud.

That statement is True

Frauds are gonna exist, no matter what country you're in

No matter how many frauds are there that exist around, if you're smart enough to recognize it, you won't fall into the fraud

Otherwise, no matter how hard the Governments' work to reducing the amount of frauds around you, if you're unaware and gullible, there's a pretty high chance you're gonna fall to one