Is Micron Technology a pricey tech stock or a hidden gem in plain sight? This eye-opening chart might help you decide.Some investors think Micron Technology (MU 0.15%) stock is incredibly expensive. In a certain slant of light, they're not wrong.The memory-chip maker's shares trade at -- make sure you have a seat -- 151 times trailing earnings and 932 times free cash flow today. That's a lofty valuation by anybody's standards.But there are other ways to assess Micron's market value. The company is in a posi ...