After some digging, The Windows hosting minimum is $3.52/mo if you choose the 3-year billing cycle. Whoever runs their QA needs a dressing down! The Linux at $3.09/mo is accurate, though, if you go for a 3-year billing cycle. The shortest cycle is 6 months, which will cost you the equivalent of $4.32/mo and $3.25/mo for Windows and Linux, respectively.
Many web hosts offer limited features in their starter packages and then expand the offerings (sometimes tremendously) for higher-tier plans. Read the small print to make sure the plan you are selecting offers what you need. If you need a site builder application to design your website, make sure that the low-cost web host you are picking actually comes with a site builder. Many of them require you to pay for the builder as a separate add-on. Website builders usually don't cost a lot of money, but if you can find a web host that includes one for free, that's money in your pocket. And, if it's integrated with your hosting service, you're more likely to have a smooth, supported experience.