Most REITs have seen their valuations expand with the market rally, but we havenaEURtmt missed out on all of them. In a minute, weaEURtmll discuss a trio of dirt-cheap REITs with attractive yields between 5% and 6%. First, letaEURtms look at the aEURoeShiller PE.aEUR This is the aEURoesecond-levelaEUR price-to-earnings ratio, created by legendary economist Robert Shiller, that factors in average inflation-adjusted earnings over the past decade.