We construct our six Trinity portfolios with what we believe are the best ETFs in the market. Some of these ETFs come from respected providers such as Vanguard, while others are our own (Cambria's). Whether from Cambria or an outside provider, these ETFs have related expense ratios. Therefore, Cambria generates revenues from the underlying expense ratios of its own ETFs. Cambria's average underlying ETF fee is 0.54%.