In this Market Foolery segment, host Mac Greer, David Kretzmann of Supernova and Rule Breakers, and Ron Gross of Motley Fool Total Income pull back the curtain on a back-end e-commerce platform provider that 500,000 small to mid-size merchants globally use so far. In the gold rush that is internet retail, Shopify (NYSE: SHOP) is the guy selling picks and shovels, and based on its growth rate, balance sheet, and more, it’s doing precisely what it needs to.