How much does a computer tower case cost?

Answer 1

There are some small cases and low-end cases for about $50-75 and some larger size or very nice/attractive ones going all the way up from $90 to $150 and $200. If you don't care about fancy looks or the ability to hold massive amounts of hardware, you can get away with one that will suit you fine for well under $100 (all prices USD). If you feel like you're spending too much for one, stop and price some other options. Cases should generally be one of the least expensive desktop PC parts.