Found my info!! Is the searcher for real??

I found a searcher. She states that she has my birthmothers maiden name, married name, name of her sister and husbands name etc. But, before I get this info...she would like $500.00 for the fee. I really really need to know if anyone else has heard of her or if she helped you find your birthparents/birthchild. Please....any info would be so helpful because I want the info....but I want to know its on the up and up. Thanks Heather 68