I picked up Ghost Control Inc while browsing some of the newer Desura stuff. It's 33% off right now, which puts it at or below the magic ten dollar number.
Pretty much a turn-based tactical strategy game of running a Ghostbusters business. :D
Could've sworn someone mentioned it here awhile back but my search didn't bring up the thread.
http://www.desura.com/games/ghostcontrol-inc
I played it a bit for a while.
It's nice but can get pretty repetitive quickly enough.