The PRICES method is a problem-solving approach that can be used to negotiate effectively. The letter "S" in the PRICES method represents "Solutions". In this step, the parties involved in the negotiation work together to identify and evaluate potential solutions that could address the problem at hand. They consider the advantages and disadvantages of each solution and try to find one that is mutually beneficial and meets everyone's needs. Once a solution is agreed upon, the negotiation can move on to the next step, which is "Agreement".