If you're a BRILLIANT musician, producer etc who has songs ready for commercial use, and you find an industry professional who isn't just on that site to make money out of you, then you have a platform for decent advice, and maybe work. Just avoid the people that big themselves up with artists they've worked with etc, be savvy and you will have more luck.
Occasionally they give away freebies or cheap deals etc, you'll be notified of it if they do. If you don't want to pay, you can always earn it by rating songs, I've never bothered personally :/ but compared to other menial money making tasks online, it's certainly one of the better paid ones!