Don't worry, I have screen-shots.
This guy applied to my gmodstore job: here
He proceeded to sell me a script from ttt-fun DarkRP.(I already added the server owners on steam to inform them.)
I think the screen-shots are proof enough.
Update: He privated his account.
Update #2: Views Thread
Thanks for reading guys, hopefully something gets done about him, it sucks to get scammed.