Lol keep in mind you are reaching a price that is EQUAL to what trusted NX sellers sell at in the game. Not exactly competitive!
A few euros too exaggerated in my book, considering there is always a banning risk.
A few numbers;
Mostly price fluctuates around 800 gold per 1NX for trading as a (trusted) NX seller ;
10M / 800 = 12.5k NX (12.5 €)
Even if you want to undercut and quickly sell through NX by TIR coins you could easily do this at 700-750 gold per 1NX when you wait on the right time in the day ;
10M / 750 = 13.33 NX (13.3 €)
I guess in the end, maybe you could still pay same value in the benefit of not having to sell for yourself I suppose.
Regards,