Fraud is fraud,
if its performed: here (a small site with dilligent members),
vs: ebay (a large marketplace with protections in place)
vs: facebook (a global, corporate owned, bohemuth, with the responsability of a dog walker over a sidewalk poop)
The parties with ownership need to be accountable and respont to incidence of fraud being performed via their platforms.
Lets face it, the visability of activities on meta is geared entirely towards exploiting your data for advertising revenue, not for anything to do with ethical trade practices. IMO: that marketplace is worse than Tortuga or Port royale in the 17th century.
I wouldn't buy glycophosphate from there.