“Is TAG (Technology Awareness Group) a not-for-profit business”
No, TAG is not a business at all. It is a group of volunteers who assist those who have smart phones install and set up filters suited to their needs. Sometimes the solution most suited to someones needs is a product sold by a for profit company which TAG is asking you to pay for since it is being installed on your device to protect you. Who should pay for it, the volunteer who will help you install and configure it?
“Should it be the same price as non-kosher absolutly.”
Who should shoulder the additional costs, the business (sometimes they do, sometimes they dont)? You want kosher meat, buy a cow, learn the relevant halachos and do it yourself. If you want the convenience of purchasing a ready to cook piece of meat that is certified by a reliable person (agency), guess what, there are those who are willing to provide such a service, provided they make a profit which includes the cost of paying the Rav Hamachshir. As to multiple hashgachos on the same store/product, it is because the store/company feels it will appeal to the widest range of customers and the investment is worth it. As an aside, do you really believe that on a bottle of wine with 6 certifications, there are 6 different people representing the 6 hechsherim at the plant? The same person almost certainly works for all of them, this is especially true the further you go from an established Jewish community.