Trade With Caution?

Scammer's profile link: http://www.sythe.org/members/472400-sirbluenite.html

Explanation of the trade:

How they scammed: Not wanting to use a middleman because it was "only a 30m trade".

Sythe PM picture: http://prntscr.com/ako4er

Skype profile ID & conversation:

1. Asks if I'm willing to go first.

2. I say no, we can use a middleman. (Because he has few vouches)

3. Deny's the middleman because it's "only 30m".

http://prntscr.com/ako4lx

http://prntscr.com/ako566


Other relevant trade screenshots:

 

not worthy of a twc. nothing says people have to use middlemen