When I started, I made a similar mistake and paid too much attention to the monthly cost. Later, I realized that the location and limits mattered more for what I was actually doing. I also checked how easy the service was to configure, because complicated settings can get annoying quickly. These days, I usually make a short list of the features I need and compare a few providers side by side. It makes the choice much easier and stops me from paying for extras I probably won't use.