I do believe there are some who have a gift but, as other have said, those who truly have it are the ones who don't charge for their services.
I did have one interesting experience shortly after my mom died. I was staying with a friend and we went to her meditation group. The woman who was leading it (she who coined my "That was some firetrucked up sh!te" tag line) came into the room, looked at my friend and me, and asked if someone had just died for one of us. She was getting very clear messages from mom. I honestly never believed that people could receive messages from the dead, but when she said Mom was with some one whose name was something like Cyr, I freaked out a bit as her brother's name is Cyril. Then she said Mom was dancing in high heels, which also freaked me out since Mom had surgery about 6 months before she died to rebuilt her spine, and her goals were to wear heels, again, and dance. There is no way that woman could have known that.