Wise Bread reader Bob M. submitted the following tip about shopping at Amazon:

I came across this [Slate.com article] that talks about how Amazon offers a refund of the difference should any item you buy on Amazon decrease in price within 30 days of your purchase (and how Amazon doesn't publicise this policy). I found this link from the article useful because it's a site that automates the checking for you. I'll have to get in the habit of doing this every time I buy something from there.

Nice find, Bob!

Here's the deal. If you buy an item from Amazon and the the price goes down within 30 days, you can get a refund for the difference. All you have to do is ask customer service.

This isn't about matching prices from other stores, this offer only applies if the price at Amazon goes down.

Here's the link to email customer service. Or better yet, call them at 1-800-201-7575. Dial 7 right away to get to a live person, and ask them about the 30-day price matching.

There doesn't seem to be an official Amazon page about this policy, but ask about it and they should refund the difference. (At least, according to Slate.)

The second link Bob mentions is the Amazon Price Watch webpage at frozenwarrior.com. You can enter up to four items at once along with your email address, and if the price drops for any of your items, you will get an email. This tool makes it really easy to stay on top of potential savings! Be sure to stop by after every Amazon checkout.

If you bought anything from Amazon over the last month, check to see if you can get a few bucks back!