Get it now... it won't last.
Sarah's MySpace and her website says this is a limited offering. I really wondered if I should put Rose River up on Noise Trade and try the same thing; but even the cheapest deal they offer is $75. Since we're a local band, it doesn't make much sense to get mailing addresses to announce concerts. Still looking for good cheap promotion ideas though... any one got one, let me know. Until then, I'll keep sharing you the free stuff that I'm trying... but be known there is a ton of stuff on that Noise Trade site.
It intrigued me in Sarah's comparison to Gillian Welch and Joni Mitchell, but check out who also has covered the songs she wrote, an impressive list.