I don't want to be some annoying skeptic, so if you think GEET is worth your money, then go to the seminar. Go and test out their product. Bring it home with you, if you want. Go build one, and test it yourself.

It's your money.

I only give you one harsh warning:

Faith and science are incompatible.

Either you accept a thing is true for no reason, and it's called faith,

Or you test a thing before claiming it is true, and then get others to test it, and understand how it works, and call it science, or partial science.

The actual scientific method is quite a bit more intense than just testing a thing. But eh, it's your money.

You spend it on whatever you think is good technology.

A truly worthy investment will always bring you riches.
An investment in trash will only bring you ruin and lost money.