Have you checked out Amazon's Lightning Deals? I have gotten some incredible savings on these but don't get sucked into an all day trap of checking back every hour. Instead check in the morning and look at when they'll be releasing any categories you're interested in, and then check at those time slots. Or just check when you're on Amazon already and don't make the extra trip by their site every hour. Regardless if you want to see these secret deals you'll need to click on the "gold box" in the upper left hand area of the screen, and then next to the 'Gold Box' deal of the day is a list of Amazon's Lightning Deals which last about an hour unless they run out before then. About 2 weeks ago I got some XBox controllers here for $34.00. Great deal!
Go here to see today's Lightning Deals or check them out any day in the Gold Box Area. Hope the tip was helpful.