this type of conmen oso exist in lelong & mudah.

they put real life photo of the real phone, but then they sent u fake one.
if the buyer realizes this, they will say 'oh, we wrongly post' & do refund.
if buyer never realizes, then they untung kaw2 liao.
they are verified sellers, thats why people easily trust them.

basically, they just tried out their luck.