Laptop shopping can turn into something shocking when you start looking at price tags. It’s not uncommon to spend thousands of dollars on a portable PC these days, and if that scares you, good news. Chromebooks, once derided as for elementary school students only, are getting better and better with age. Google’s polished and refined Chrome OS has proven to be fast, energy-efficient, and virtually virus-free. Hardware manufacturers responded by offering laptops that squeeze tons of…