Diversification and minimising investment costs are the two most important rules of investing. For example, low-fee passive index funds, such as the Nifty50 index fund, are better than higher-fee active mutual funds (MFs). So, superficially it would seem that zero-fee financial services ought to be beneficial. In reality, zero-fee or absurdly-low-fee financial services can ultimately result in very high cost to investors.
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