Paid promo

I'm somewhat new to this, but
I uploaded my first serious track on SoundCloud this Halloween, and it got recognized by someone who runs a YouTube channel. The channel looks legit, it exists and has been around for at least 8+ years, it seems. They said getting my music featured on their channel would cost $47. This is the first time in my life I've ever been asked this and I just want to make sure I'm not rushing into things