im currently considering buying a used gtx 670 for 150€ (asus directcu ii) or r9 270
Cool story. Is there a question? Or are you trying get an offer? If you're trying to get an offer, you should probably post in Buy/Sale/Trade forum.
Hahahahaha
please consider further
its seems like its not worth to post in b/s/t because im there are mostly offerings from the us and im from germany