In the Amazon Webstore offer it says

[autumn06]

 I UNDERSTAND THAT THIS CONSUMER TRANSACTION INVOLVES A NEGATIVE OPTION AND THAT I MAY BE LIABLE FOR PAYMENT OF FUTURE GOODS AND SERVICES, UNDER THE TERMS OF THIS AGREEMENT, IF I FAIL TO NOTIFY THE SUPPLIER NOT TO SUPPLY THE GOODS OR SERVICES DESCRIBED.

If I pay the $2.95 shipping will I be charged for other stuff? Is it really ok to do this offer?

[Stealth3si]

Make sure you read the TOS carefully.