Nthing the love for Binary Domain. If you missed it during the Steam sale earlier this year or you don't have a PC to play it on, this is a pretty good price for it. It's a great reminder of why Sega's still around despite all the hard times.
Catherine is also really good, and since it's kind of niche you're going to have trouble finding it for a better price.
Yeah, these aren't the $10 deals we all like, but both these games seem to have held their value. Niche games do that sometimes. You'd think you could find something like Deadly Premonition for $5 since it was $20 when it was released, but it doesn't always work like that.