This Canon S110 is probably the best under $50 portable digital camera you can buy today. Yes, its refurbished, but its refurbished by Canon themselves so it means its like new when you get it.

The Canon S series was widely lauded as the best pocketable digital camera in its day, a few which not more than a few years ago used to command a $400-$700 price range. Of course now with so much competition, and newer models that have since came out its no longer top of the line.

For $50 you can't beat this...

($250 on amazon right now)