so i was thinking wouldn't it be realistic if the prices on the minerals in the market fluctuated a bit? just the value of them changes either up or down in selling/buying price every day or to the value by say up to 10%? what do you all think?

Its already set up like that I think but because of the amount that is bought/sold they have hit their minimum prices.

Galaxy wide market or trading will be avaiable soon. So you will see the peices of artifacts soon fluctuating soon.

Minerals might not have that effect since there is no useful demand for minirals on the player side. Although there were events in the past that made kurenite unavailable to the market. Which had an effect on player demand sine players needed the kurenite from other players.

Yep, the Mylarai mission chain did that. Thankfully I wasn't able to get kurenite yet, lol.