This isn't a nice trade in any way, it's a normal trade, but it made me happy, because this was the only guy I encountered that was nice to me, and was willing to negotiate price, instead of just plain ignoring me/telling me to go f*ck myself.
Normal conversations I had:
-Howmuch you offer?
*150e
-*Silence*
Or
-Lolnoob, gtfo
Or
-Noty (ffs, NEGOTIATE)
Or, this one also happened:
-150e is a bit low
*Well, then what were you thinking of?
-More like 185e
*I think I can settle for 175e
-180e
*Deal
5 minutes pass
*Well?
-Noty, last one on guru sold for 200e, so I'm not selling for under 200e. (which was a complete lie, because the last one on here had b/o 200e and highest offers of 165e)
This guy however, made me very happy, he was the only reasonable man I encountered all day
-Howmuch you offer?
*150e
-I bought it for 200e^^ (immediate sign I finally found a friendly guy)
*Yes, but how long ago?

-1 year or something
*Prices change you know, and ecto is a lot higher than a year ago
-That's true.
*So?
-Yeah, 150e sounds like a reasonable price.
I know this belongs sort of in trader's ethics, but this is the trade that made my day. And it's not a total scam like the stuff i've seen on here :P