From someone who is constantly buying cheap batteries and replacing them in my twins toys, I can tell you this is a great deal. I know the limitations of these batteries, but they are perfect for the noise making toys my boys love to play with. I use HD batteries now, and replacement rate is decent, average toy lasts a few months. I would agre, if you plan on running these in grown up electronic devices, you may want to look to better batteries, but these do have a use, and I picked up 3 (1AAA, 2AA pacs) and am very happy with the price and purchase. These work very well in LeapFrog, Fisher Price, and other kids toys, and just having a decent stock in the house, means I never have to worry when a toy does stop, I have plenty of replacements on hand now.
And push comes to shove, if I need a quick replacement for my wireless mouse/keyboard or remote controls, I would use these as an interim solution.
So to sum up, while not the best battery in the world, the price is right for certain applications, and if you have kids, and buy cheap batteries for their toys, this is the perfet solution. I will add, while I know the benifits of rechargables, it just isn't worth it for my kids toys, when these work out soo cheap!