I saw something interesting on Amazon.com today:

That's what the price was the first time I viewed this item. The second time, it looked like this:

The third time, it was back to $6.03 + $2.95 shipping, and the original seller. At first, I didn't notice that the seller was changing, so I figured they were just monkeying with the price to see which way customers preferred to spend approximately $9.00.

The 4th time, I saw this:

Yet another pricing combo and a different seller.

The prices only varied by 2¢, so I don't particularly care who ships it to me. But it sure was weird.