The problem is first, a migraine is debilitating. At least for me. I can spend 24 hours in bed in severe pain if I do not get rid of it. And after I may spend the next day recovering from it (relatively fast). So if its hearsay that a magnetic headband works, how can you prove what I feel from is a placebo affect? Because if if that were the case and it was all just in my mind that healed the migraine, then you'd think psychologists/doctors would help people use their mind to "pretend" their better mind is better since obviously it would work. But they don't do it because in some cases you can't placebo your way to perfect health. Only evidence could be for you to be at my house when I have a migraine and see the magnetic headband get rid of it.
Not to mention you say you would think such wonders would be known, cheap...etc for people. Are from america? Because here pharmaceuticals rule things. And the FDA. So of course the FDA/Pharmas are not going to approve of magnetic headbands because it means no money for either of them. And no money means no job. You can't get beyond rich off of magnetic headbands. That should be the logical conclusion as to why these things are normal practice to get rid of migraines. To be fair though most of the people that don't believe magnetic headbands can work I notice are non-christian. Which makes sense because they are usually the ones who need evidence of everything or they can't live without knowing and hence find anything hard to believe.
Which is why they also find Christianity hard to believe in. If you cannot see God, He must not exist. Or when people see a glimpse of heaven on deaths door, science triers to explain it away. When someones cancer disappears overnight after being prayed over by a church, science explains it away. As I say if God came down from the sky Himself (like literally descended out of thin air), performed some miracles, created something instantly (lets say a diamond the size of a house)... most non-believers would still not believe its Him. Which is either because they still want science to prove it (which how can you prove something thats out of our realm and understanding?) or they don't really care if something is real because that thing offends them. Hence God is offensive so it doesn't matter anyways.
Which is ironic because they say christians are close minded. Yet they do the same thing when it comes to what they don't like. Though I still think a close minded person can only accept everything just came into being rather then thinking outside the box and saying "What if a creator made us?". At least alien fanatics believe such things to some degree. Ok my rants over. Unfollowing the topic since its to frustrating. My magnetic headband works for me period. You have no way to explain why it works besides throwing around the word placebo. Which is just a way for you to feel comfortable of something you can't explain.