Re: any discount or promo code?

With the game being €4,99 right now this is as cheap as it has ever been. Especially now with the premium pass being free even which saves you another €30-60 (depending if BF1 Revolution is on sale or not).

It won't get any cheaper than this and 3rd party sites won't even go lower than this. Aside from that, it's better to get it from a trusted source or simply Origin either way.