Profitability is not by appointment. I was about a month and half with Varta battery 7.50. With these Alkaline batteries, I do a week and half. With shipping costs, they amount to about 1.50 to 10. I do not see the point of continuing to buy these batteries. In addition, for the environment, it is recycling 10, against one for Varta. I'm done for this article. Franck.