Not that I have that much doubt about a newbie scamming with a steam account of course.
All of the sales threads he has posted on this website have duplicates under the name "dogeitrade" on various boards from Reddit.
For example, here is a $202 newegg giftcard he put up for sale on reddit: https://www.reddit.com/r/giftcardexchange/comments/4gjj7s/h_202_newegg_giftcard_w_btc_or_wmz_or_pm/
A quick search on this forum finds us this: https://bitcointalksearch.org/topic/wts-200-newegg-giftcard-85-btc-1452765
He also had duplicates of his Fallout 4 for-sale post
https://www.reddit.com/r/GameTrade/comments/4hq2xz/h_fallout_4_steam_w_35_paypal_bitcoin/
https://bitcointalksearch.org/topic/m.14743586
His Steam account still advertises a few games like Fallout 4, Witcher 3, and No Man's Sky which are the same games "dogeitrade" is selling.