1. A method for optimizing a pricing strategy using an efficient frontier defined by a relationship between a master metric and a trade off metric, the method comprising: generating off-line, by a processor, a plurality of candidate solutions, each of which comprises a pricing recommendation that satisfies pricing rationality constraints, by performing a series of pricing optimizations; storing, by the processor, the candidate solutions in a repository; selecting, by the processor, a first master metric and a first trade off metric; evaluating, by the processor, values of the first master metric and first trade off metric associated with the candidate solutions; and performing, by the processor, a real-time algorithm that generates, directly from the candidate solutions, an approximate version of the efficient frontier that is defined by the values of the first master metric and trade off metric.