I've been noticing it for items sold by Amazon, typically those which they offer free shipping on. The free shipping part of the deal is usually what beats the other prices I find, but then I spend time trying to re-find the non-Amazon retailers after Amazon increases the price or drops the free shipping.
I realize that non-Amazon shops selling on Amazon set their own prices.
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Thanks for the insight Jeff. I figured they (Amazon) ran things that way, but was curious if they offered automatic price adjusting features to the other sellers they host. A few times I've witnessed it in real time, or at least thought I did. Now I'm curious how accurate the Camelx3 site is when it comes to taking pricing snapshots.