In the weeks leading up to the release of Nintendogs, Amazon.com was selling Nintendogs Chihuahua for the low price of $15. Unfortunately, Amazon has since rescinded the offer issuing a statement that the price was a mistake.
Hello from Amazon.com.

We regret to inform you that an error caused 'Nintendogs - Chihuahua' to be displayed at an incorrect price.

In accordance with our posted policies on pricing, we are unable to offer this item for the incorrectly posted price. Therefore, we have cancelled your order for this item. At any given time, despite our best efforts, a small number of the millions of items on our site may be mispriced. We do, however, verify prices as part of our shipping procedures. If we discover that an item's correct price is higher than our stated price, we will, at our discretion, either contact you for instructions before shipping or cancel your order and notify you of such cancellation. This policy is posted in the Help section and is accessible through numerous other areas of our web site.

We apologize for any inconvenience this may cause. We value your business and hope that you will give us a chance to serve you again in the future.