Dan,
Heres a template, as i know that you're busy today with Amazon Prime.
<Buy/Donate Gift> <Ammount>To <Website> Via AMEX Express Checkout And Get A $10 Statement Credit
You can read more about AMEX Express Checkout in this post.
Just “purchase” the<amount> <Item> by logging into <Website>and then select AMEX Express Checkout.
You can get a $10 statement credit on each AMEX card that you use to make a $1 donation via AMEX Express Checkout.
Each AMEX card is eligible for a $10 statement credit for making an order from each of the 11 retailers in this post.