The centres were ordered to immediately abandon the agreement and enrol in an MyCC e-learning course on Competition Compliance for Small and Medium Enterprises within a month of the order.
Companies that violate the Act are given 30 days from the date of the decision to pay the penalty.
MyCC chief executive officer, Iskandar Ismail, said: “Price-fixing is a cartel activity which is taken very seriously. It exploits the consumer by forcing him/her to pay an outrageous price. The commission will not dither in taking stern action in order to protect the consumer.”