No dont buy from dollar stores, These are cheap made batteries and you will just be wasting money you could spend toward name brands that will last longer.
AOL just did a headline on the top 5 things not to buy from dollar stores and toothpaste and batteries are the top two.. Batteries
Like most people, you probably don't think twice about what's inside those ultra-cheap batteries you're buying, but you should. Most dollar-store battery brands are made with carbon zinc -- a far more inferior option than the ones you can buy at the hardware or drugstore, says Tom Merritt, executive editor for electronics review site CNET. "You do not want those," he says. "It's one of the original battery technologies, and generally has very poor performance." You'll go through the pack of carbon zinc batteries much faster, negating any savings from the cheaper purchase price. Look instead for alkaline batteries. Unfortunately, these batteries are a rare find at dollar stores