No matter how much precautions you take , there will be risk in personal trading.Even with high ranked players.Best way is to ask item you are buying/trading first but if everyone acts like this , then there won't be any trading

xD Its all about trust , check the reputation of player and ask about him/her to your guildies/freinds you are trading with and then trade only (its what I do ). Usually scammers don't bother to show on forums but who knows

xD
Also , Aeria isn't going to help you z_z even if you send ticket.
Lol at first place they will blame you and about banning the scammer , they won't do it until he/she scammed many people and got reported but still it will be like a ban for a week ??
XD and scammer not gonna get banned if he/she is a massive ap buyer.
What I am saying is that you should be extremely careful when trading , best way is to get GS as middleman and trade with only trustworthy people.Keep patience , its better to lose some deals than getting scammed , I saw lots of people who got scammed cuz they were in rush and entrusted wrong people -_- What xeth said is true

xD