Check With your Power Company. (Score 1)

I live in Sunny Florida, Unfortunately Tampa... The "Lightning Capital" of the USA. Our local Power company offers a product called a "Zap Cap". This device attaches between (behind actually) the meter before the power heads into your Main. The Device is cheap because there is a trade off, You agree to volenteer to have your home effected by things like rolling blackouts and such (tho I am unaware of one happening to my home in the past 15 years). Since we had it installed I have not suffered as I have from not just computer loss but with anything with a chip (washer /dryer , dish washer Microwave etc). Ive had very near strikes but none direct hits. (as explained above your would need a huge something to dampen them(). Anyway check that source.