It can be increasingly dangerous to purchase this next item at the dollar store. Extension cords and power cords have to be able to transfer electricity to devices effectively. With cheaply made extension cords, there’s no guarantee that it will be done safely. A lot of these off brands use questionable materials; if your extension cord or power cord is ineffective, it could easily overheat and cause a house fire. Poorly made extension cords have also been known to trip electrical circuits and short-circuited breakers. It’s better to avoid all of that by buying the more expensive option.