I have gotten a ton of use out of this game. It's really good for car trips with multiple people as the screen obviously is legible in the dark. The handwriting recognition is surprisingly good, even in a bumpy bus/car. I forget which letter, but there is one that I consistently have to write as upper case or else it won't be recognized, but otherwise it works great.
I think I paid $20 and it was well worth it. At $10, this is cheaper than many of the crossword collections you could buy in book form.
One complaint is that you can only have one game in progress at a time for challenges (i.e. picking monday through friday) so if you get stuck on a puzzle and want to pick it up later, you have to stop playing it and discard your progress, or cheat your way through the clues you don't know.