If people have their healthy scepticism intact and still wanna try it despite that it costs money, that's fine with me. I wouldn't bother with it and I don't like the idea that someone might be selling placebo. If it was free, it wouldn't matter as much.
To me, it just seems too much like they are trying to sell placebo. All the tips they give you - relax, concentrate, believe, don't be distracted - are things that should help give you a placebo effect. Doing all that and concentrating on sound should also likely have a meditative effect and for those who have tried that will know that a certain feel of tingliness, heaviness and so on, is common when meditating. That along with placebo should all add to the illusion that this stuff works. It's like the perfect scheme.
Well, for me it is. I expect that if you take a group of ten people, shove'em into a spooky house, give them an ouija board and tell them the place is haunted, then they're gonna have "paranormal experiences", ghosts or not. It is also a kind of placebo effect ..
However, I'm open to the concept of ghosts. It hasn't been disproved, but it's not proven either. Aside from being biased towarRAB science and the empirically proven in general, I would rather be proven wrong as a non-believer than as a believer.
There are lots of people and products out there that try to exploit the vulnerable and the gullible. Check out this video here for example for a story about a woman who's made it her life to deceit others.
[youtube]nru2O316OgY[/youtube]
And if you wanna watch something absolutely hilarious regarding ghosts, you should watch this video where they make up a ghost story connected to this old building, then invite lots of mediums and see what they all come up with .. One woman even gets possessed by the ghost they made up.
[youtube]u4qGfNViVN8[/youtube]
I have had "ghost experiences" myself, but I think they were the product of my own imagination, really.