Archived 76561198046385057 Repeat Quick-switch Offender

Victim:
|steamname: Tsukiko Tsutsukakushi
|steamID32: STEAM_0:0:39960852
|steamID64: http://steamcommunity.com/profiles/76561198040187432
|customURL: http://steamcommunity.com/id/marckythesnowman
|steamrepURL: http://steamrep.com/profiles/76561198040187432

Scammer:
|steamID: Sporter
|steamID32: STEAM_0:1:43059664
|steamID64: http://steamcommunity.com/profiles/76561198046385057
|customURL:
|steamrepURL: http://steamrep.com/profiles/76561198046385057

Screenshots:
1.png shows my inventory history.
2.png shows my inventory value history in backpack.tf

I would provide more screenshots if necessary.

Description:
I was buying a pair of earbuds for 21 keys on outpost. This guy added me, instantly traded me, showing me his CLEAN earbuds. I placed my 21 keys up on the trade, while he was chatting with me through the normal chat window to 'distract' me I guess. After the trade, I realised I had received a gifted earbud. I asked him nicely through chat with he would return me my keys. He said he would only give them back for a lower price of 18 keys. I asked him again if he could return all the keys, and he instantly went offline. He removed me from his friends list and blocked me.

I later found him to be an offender of a previous quick-switch scam. I then realised my 'mistake' wasn't a mistake at all. Here's the steamrep link: http://forums.steamrep.com/threads/76561198046385057-melİh™-atlı-kedi.15069/

Chat History:
Sporter: hi
Tsukiko Tsutsukakushi: hi
You have accepted the trade request from Sporter.
Sporter: do you intresting this?
Tsukiko Tsutsukakushi: 21 keys?
Sporter: yes
Tsukiko Tsutsukakushi: waiyt
Tsukiko Tsutsukakushi: sorry
Tsukiko Tsutsukakushi: i realised its gifted
Sporter: _?_
Tsukiko Tsutsukakushi: can i have my keys back?
Sporter: :/
Sporter: sorry
Sporter: ı asked bro
Tsukiko Tsutsukakushi: ==
Tsukiko Tsutsukakushi: come on
Tsukiko Tsutsukakushi: seriously
Tsukiko Tsutsukakushi: im asking nicely
Tsukiko Tsutsukakushi: i made a mistake
Sporter: only back 18 key
Tsukiko Tsutsukakushi: ==
Tsukiko Tsutsukakushi: seriously
Tsukiko Tsutsukakushi: i paid 21 keys
Tsukiko Tsutsukakushi: and you are giving back 18
Sporter: yes
Tsukiko Tsutsukakushi: that's purely taking advantage
Sporter: your mistake bro
Tsukiko Tsutsukakushi: ...
Sporter: 18 or no
Tsukiko Tsutsukakushi: can't you be friendly
Sporter: ok
Sporter: goodluck

Sporter is now Offline.

Hello, do you have a screenshot of the chat showing the original agreement?

Please provide a screenshot of the chat, we do not act on mere transcripts.

its folse ı am only put 1 buds and tihs gifted s/he lie ı am not again scammer
its folse ı am not make this only sold gifted buds later turn me sell for me but not buy and report me

its folse ı asked you intresting
she say yes
she asked 21 key
ı accpet his offer
later trun me bought but its gifted turn my keys
ı am not saw clean buds ı am not quick-swicth