With the current state of the economy more and more people are more likely to purchase batteries, extension cords, electronics, etc. at discount stores, such as your local Dollar Store.
Before you buy your next electronic there, see this response to Ask Liz, "Is It Worth It? Counterfeit Electronics If you like bargains it's easy to find them these days in many stores that sell electrical items such as extension cords, power strips, and chargers. But is it worth it?"
The video is actually pretty scarey and eye opening.