Amazon has the Transcend 64GB SDXC UHS-I Speed Class 3 card for $29.99 (reg. $54.99) today. Also, the 128GB version is just $69.99 today as well.
If you are using more of a consumer grade camera and don’t need the speed of the Speed Class 3 cards above, check out the basic Transcend 32GB card for $12.99 here on Amazon.com.
Check out more deals on the Green Monday Camera Deals page.