What are you talking about? Are you on about the so called tipsters whose details appear in the racing press?
If so, you don't have to subscribe. Their knowledge will be no better than anyone else's.
Just think about it: if you had a tip straight from the horse's mouth, would you really want to share it with anyone else? O course you wouldn't.
I'm afraid that these "tipsters" prey on the gullible and unaware. It's no different to the envelope coming through the door telling you that you've won a fortune. It's all a con!