“If returns are going to be 7 or 8 percent and you’re paying 1 percent for fees, that makes an enormous difference in how much money you’re going to have in retirement.”“Costs really matter in investments,” Buffett said during an interview with CNBC in 2017 (5).Paying 1% for a professional to execute sophisticated strategies that involve options or exotic assets like private credit could seem justified. But the after-fee performance of many of these funds and strategies can fail to live up to the hype.Meanw ...