Can't hurt to chat them.
Not worth your time I think.. If you do try and succeed please report back. I wonder if it's a strict policy (per chat below) or depends on CSR mood.
This is a partial copy of my recent chat for 3 items that had a big increase. They would not honor the lower price from a day before.
Amazon Rep: I'm sure it's disappointing to see an increase in the price of the item you were planning to purchase. Our prices regularly change (we constantly receive new data from our suppliers) and the price you saw was the lowest price we were able to offer at the time.
Then I asked about price matching as seen for lower price on ebayAmazon Rep: I'm sorry for any misunderstanding.
With the exception of TVs and cell phones with service, Amazon.com doesn't offer a price match guarantee. We do consistently work toward maintaining competitive prices on everything we carry.
Because the marketplace is constantly changing and we strive to offer the lowest price, you'll see some fluctuations in our prices over time.