The act of buying electronics online might have sounded bizarre 15 years ago. Never mind the idea of doing business on the then-fledgling Internet. But who would want to buy something like a television, a VCR, a home stereo or a car stereo without carrying it out of the store? Today, of course, buying electronics online is anything but unusualits a fact of life. In 2009, online retailers made almost $900 million worth of sales on “Cyber Monday,” the first workday after the Thanksgiving holiday and a day when people nationwide try to find good deals on Christmas and Hanukkah…