Why everyone on OLX is insane?

idk what is wrong with our people or who's even recommending them the price of their listings, everyone selling their 1660super builds for 200k-230k. rx 580 builds for 150k
they are selling their used builds for price that is 50-70k more than the market price. dont they have any idea that they used the product and its value is meant to go down because of that, but no they are trying to make profits on their used build. Crazy people