No rule for this one
No ending or word group predicts the article of Preis. Learn it as a pair and say it out loud: der Preis.
der Preis
It's der Preis. Preis is masculine, plural die Preise.
Der Preis ist gut.
The price is good.
No ending or word group predicts the article of Preis. Learn it as a pair and say it out loud: der Preis.