In a prisoners’ dilemma game, competition will harm both players. The players would be better off if they worked together, but if the game is played only one time, then self-interest will always force them into ruinous competition.
In a repeated prisoners’ dilemma game, the players might be able to work together to achieve a good outcome. Hidden actions, short time horizons, and last period problems might still make cooperation impossible, however.
If your suppliers are charging you high prices, you could benefit from creating a prisoners’ dilemma.