These two low-priced retailers have the potential to boost your investment returns. Yes, patient investing in discount stores could make you $1 million over the years. Who knew?Investing in the right industries can significantly boost your portfolio's returns, and discount retail stores are a prime example. Affordable apparel and home goods may not sound like a moneymaking business idea, but there will always be solid demand for these goods. Sector leaders like Ross Stores (ROST 7.79%) and TJX Companies (TJ ...