Need a "Dislike" button for this!!! Sharing credit/debt cards with who you are sharing the account with is going to kill that deal.
I think that's the point. It doesn't really matter for me. My wife and I share my prime membership, and we only use our Amazon Chase card for purchases. Both CC's have the same account number anyway. We've started our Christmas shopping using the chase card which gets triple points from Amazon, so we'll get ourselves a little something for free around November.