For all your Info i can prove everything while dealing. I can give full money trail.

And In few countries btc not available so i manage some other payment method.
And about trust? I have done 6,7 deals through Facebook. I go first in all trade if buyer can satisfy me though some verification that he is legitimate buyer
For your kind info i also have done deal with 20$ PSN cards. Now all 10$ cards remaining. Plus i have proofs of everything that cards are my own.