Well i was looking at the amazon site when i discovered this little section seems that deals are posted on there for short periods never knew about it and thought i would share it with you all.
Here is the official amazon spiel
Lightning Deals are only offered for certain time windows. When no Lightning Deals are available on a particular day, you'll see a message telling you to come back at another time. If Lightning Deals will be available that day but the start time hasn't arrived yet, the deal will be marked "Coming Soon." You'll be able to see the product category for the deal item and a countdown until the deal starts, but you won't see the exact item until the time arrives.