I mentioned a while back how much I like NexTag for finding the best deals online.
Twice now in the past week I’ve received price alerts from Nextag letting me know that two Nikon lenses I was watching have dropped down to my target price. From this morning’s email:

Here’s NexTag’s price graph for the Nikon 18-200mm lens (the red line is maximum price, blue is minimum, black is average):

What a great shopping tool. Price comparison services are the only way to fly for consumer items. You can find the lowest prices – tax and shipping included – along with customer ratings of their experience with the resellers. How ya gonna beat a deal like that?
Here’s a link to the item above. As always, you’ll need to click on the Price header to sort by price. The one slightly tricky things these services do is to allow stores to pay get top position.