You should never share your debit or credit card password with any Amazon seller unless you are at the checkout page requiring you to enter these details. And besides, the only card password you'll need aren't any passwords you set up online - the three digit pin that can be found on the front or back of the card are those digits you'll need to input for the purchase to be sent out Amazon's door.
Aside from creating the logo, A.J Khubani actually played a huge role in the advent of the infomercial as we know it today, which started with his Amber Vision sunglasses in 1987. More recently, his company sold the PedEgg, another As Seen On TV product which has sold 50 million units (in addition to other successful products like the As Seen On TV mop and the As Seen On TV hose). Anyone looking for the same level of success with their own product can pitch their idea to both Telebrands and As Seen On TV, Inc. although they only accept a few submissions each year.