Few details you need to know to don't get scam
they have no cash rep in dota2trader and csgorepthread
if you check their comment (most of them ) have tons of rep in few days(look at dates)
always check offer trade to find out he is already ban or not
always check their csgolounge profile and see how amny item they buy with cash you find out they buy anything
only possibilty if some one buy any item is he buy with rate of .6 or less
if anyone offer you more than .7 market price he is scammer (in most case) even if he pay first with paypal
if they use private profile or trade account they are scammer
if they advertise with another account for their main account they are scammer(dont add me here add me there .. )
if you wanna use middle man do go for it fast just search you how many pple scammed by fake middle mans so you need to talk to some one first to avoid get scammed search in reddit ask there to help you to use middleman
anyway dont think you are smart and you dont get scam
if you go first you always can get scammmm
So guys best way is use new sites for doing reall money trade like opskins.com
dont waste your items to sell soem one with huge price
never forget opskins.com