The price of anti-virus software

If you're thinking of buying a PC now, I would think also to purchase anti-virus software.
There are a lot of anti-virus software, is different in each product price.
If you are unsure which one do I buy.
OfficeScan is a cloud of the most popular.
Is $ 9,000 with a license for three years.
We could also be because OfficeScan can be installed three computers, used by the whole family.
As a product of low price is ESET Smart Security.
Download version it is $ 4,000.
May not be sold at a fixed price in general.
I is inexpensive and purchased at electronics stores or mail order site.
As a product that has been noted that Norton Internet Security is 5,000 yen.
I hope any anti-virus software, let's also consider the cost of updating after purchase.
There is version one year, and three years edition.
Please keep thinking anti-virus software has expired and almost useless.
There is also a first hand say that when you install a trial version that is provided free of charge.
Some people think that because it runs in the background, and does not matter for the user with or without the anti-virus software.
However, it is a thankless task to me to prevent the threat from the Internet.
Please consider necessary expenses like the cost of Internet communication.
Be connected to the net is going on the age of the commonplace.
Wherever you are, criminals invading your PC.