Trade "friction" - AKA why do we need auction house

So, few days ago I finally gathered around 80-90 div which I needed to upgrade my character. I thought that earning that much currency was the hard part and now I just need to go to trade site and buy what I need: 5 sockets Morior Invictus with +attr and +ele resistances. Boy was I wrong.

Every single interaction was scam attempt. I was able to get a bit more divs (around 110 currently), but it's still the same. They just put wrong one in the trade and hope you won't notice: +life instead of attributes, global defences instead of resistances etc. I gave every one of them benefit of the doubt, and after canceled trade I asked for the correct one just to be ignored.

For those of you who want to buy it, please be careful, because you might lose a lot of currency.

And for those, who defend the idea of PoE not getting auction house, please explain it to me, how this kind of interactions are fun and necessary and make a PoE better game.

Sorry, just had to went. Stay sane, exiles.