I wonder if Amazon's differing pricing by region is just an Amazon business problem or whether it applies to regular consumers as well. If the latter is the case, how does camelcamelcamel.com keep track of pricing?

The chaos seems a lot like the chaos of rapidly fluctuating prices in the stock market. It puts things out of reach of the everyday person, or if you participate, you will probably be losing something.

This is an opportunity for schools to group buy through Costco.