Dear Esther is a beautiful game... er, "game".
Not for everyone, however it's one of those games you could use as an argument for video games being an art form. (Which is a good thing.)
I payed $10 for it on release, and despite being quite short (about 90 minutes), I don't regret it. It really is quite beautiful and I plan on "playing" it again.
wtf i thought dear esther was free when i played it