You can get surge protectors that install in your home circuit breaker panel.
If you have other electronics, that will protect them as well. Almost everyone has at least one television, stereo, VCR, DVD player... and the list goes on.
If your home receives a power surge and you are using a power-strip version of surge protection, only the devices that are plugged into such a power strip will be protected. Your computer may be protected, but your television, if you don't have it plugged into another surge protector, may be destroyed, and most televisions, even small ones, cost as much or more than your computer.
Getting a whole-house surge protector is usually going to be a lot cheaper than getting separate ones for each of your devices.
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