When you think of private labels, you typically don't think of electronics retailers. Best Buy, however, has had great success taking a cue from the supermarkets and discount stores with its increasingly popular store brands.

Among the private labels Best Buy offers are a bargain brand called Dynex and a high-end brand called Insignia. Much of the public probably thinks those are "real" brands.

For you as a consumer, the advantage is that the Best Buy products are cheaper or better than the national brands. In fact, the company's private label TVs now account for 5% of all TV sales in the United States, according to The Wall Street Journal.