Regulars at the same coffee house and both have fixed regular price help collusion.
Helps Collusion:
Nola and Charles are regulars at the same coffee house. They talk regularly.
Charles and Nola both charge a fixed per-person price for a part.
Impedes Collusion:
Nola lowers her price on national television.
Nola's marginal cost is lower than Charles's.
Most of the parties are given by Trident's largest employer, a water bottling plant.
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