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Bottom line: college is expensive. Especially if you attend a traditional college or university. A good reason for why to choose online education is it can potentially be much cheaper. First off, tuition for online universities is often cheaper than traditional universities’ tuition. To make things sweeter, if you take all your classes online, there is virtually no gas, no additional parking or auto expenses, and cheaper meals (if handled correctly). 
To break it down a bit, let us begin with tuition. For the 2012-2013 school year, average cost of tuition for a public college/university was around $22,000/year, while private schools averaged at $43,000/year.  On the other side of things, an average online school year could cost around $15,000 in tuition. 
Taking class online eliminates auto expenses associated with higher education, provided you have internet access in your home. A commuter can spend as much as $400/month on gas alone. We could stop right there, that sounds like reason enough. However, there can also be additional parking fees, not to mention the general day-to-day abuse your vehicle undergoes when driving to, from, and around the campus.
Food can be a very large expense regardless of your situation, but if you handle it properly, you can cut it down to a manageable size. This process is much more difficult if you are eating every single meal in the university cafeteria, as many people do. Those meals can cost upwards of $7 a piece. If, instead you buy your own groceries and prepare your own meals, like in an internet schooling situation, you can cut that cost down far below that.
Needless to say, choosing to study online can be quite a bit cheaper. Consider this while making your decision, but don’t make it the only factor. There are many things that go into something as serious as a degree, and you should be aware of as many as possible. For the other side of the coin, check out some of the Disadvantages of Online Education.