Why so many scammers on Char Bazaar nowadays?

[Mdm_Curie]

Confirmed here. I got scammed twice recently. 2 out of 3 buys were scams.
Here :

WTS 57.9 ml sp minmatar toon (1.8 ml not used)

Looks like this is another scam. ESI is now revoked and still no toon in my account. This is bad.

and here :

Wts 36 m sp

So is the transfer initiated ? Is it by plex ?