Head over to Shutterfly and you can grab 12 customized thank you cards for FREE when you use code CARDS4U at checkout. You’ll just pay shipping which should be about $4.99. This is for the folded photo cards.
I just tested this out and my total was just $4.99 + tax for a $22+ value! This is for 12 customizable folded cards!
Find it here: Shutterfly Thank You Cards