Nope, you will find that they will not honor the lower price. Almost all websites have disclaimers stating that they are not responsible for typographical errors, or some such verbiage.
There have been companies in the past that have honored outrageously good deals (obviously an error on their website), and they were highly praised for doing so, but it is certainly not the norm.
The most you can usually hope for is an "I'm sorry" gift certificate or coupon towards a future purchase. However, Amazon rarely does that, and usually all you get from them is a letter stating that there was a pricing error, and you can go back to their site and authorize the order at the correct price if you still want it.