I am glad Magpie pointed out "now". It bears paying attention to it and all the various decisions we are making in it too -- from what I see many people aren't paying much attention. It's the difference between living consciously or not.
I think many of the ones who charge for psychic readings, etc, are scamming. With that said, I am often able to see coming events in a way that I don't consider psychic, although others have called it that. Its more like A + B = C. It's a highly tuned intuition based on discernment that grew over time watching the world. It was a strange offshoot of a mental illness I have that motivated me to pay attention at an unusually close level. And the odd thing is I have yet to find any really constructive way to use it -- its one of the things I have asked God about the most.
If I warn people, they don't believe me and they still get hurt. If I try to prevent the bad event from happening, it simply happens another way. I occasionally use it to help me make personal decisions and my closest friends who have seen how it works do likewise, but that's about all. Seeing the future is one thing -- being able to change it is an entirely different matter, I have learned. Mostly it's a pain in the butt to me, frankly.
I would advise being skeptical of anything that motivates you to pay someone money. I have visited the town of
Cassadaga here in Florida, which is where many spiritualist or mediums live. I had someone there give me a reading that turned out so vague it was a disappointment and she tried to salvage it be calling me a "sensitive". Helping out the police is not the same since I could see some level of objectivity being mainained in those circumstances. That's my perspective and I hope it was helpful to you.