Mark, Amazon has a script that will lower prices to entice a person to buy. This also happens if you view an item more than 2 times, i think it is after the 3rd time you view the item, the price may change slightly... My cousin told me about this a couple years ago.. Also, if you look closely mark, all but one of the items you listed were decreased in price by cents.. there was only 1 item that the cost was reduced by 3$... So, this is much more of a psychological tool than an economic tool.

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