Classical Guitar

So, I'm brand new here. Hi! I attempted to learn classical years ago, and let it get away from me. I've recently returned to it, and I've been much more diligent about my practice than I was last time around.

Anyway, what brings me here today is that I saw a crack in my headstock today on a Walden Classical I got maybe 15 years ago. It's a lovely guitar, and I'd like to get it fixed, but I have no expectations. It's a hairline fracture leading to the tuning pegs

1. How much should I expect to pay?
2. How serious an issue is this? I'm a little concerned it might truly break. I can post pictures if that's helpful.

Anyway, thanks for the knowledge, and I'm happy to be here. I'll try to contribute some, even if it's just nice classical pieces I find. I'm liking Lemmy so far.