I want to trade NP for a robot krawk (I'm tired of dealing with unreasonable people in the PC), and if that goes well I might consider trading NP for a UC.

I understand that purchasing a pet with real money would be safer but I'm afraid of getting scammed or having info stolen. How does one go about trading NP for a pet without making it obvious? I'm assuming the pets/NP are exchanged by middlemen and maybe the pet is put into a shell for a while so it doesn't look suspicious?