I plan on making a free photobook later this week (I have a $7.99 ECB), but I saw via Money Saving Mom that there were BioTrue printables and I'd wanted to try this product anyway.
So I bought one at $2.99, used the $2 printable and paid $1.20 OOP. I got back $2.99 and a $1 for my Green Bag Tag.
Then I used another $2 printable and the $1 from the GBT, paid 14 cents OOP (not sure why it wasn't 20 cents, but whatever) and got back another $2.99.
So I spent $1.34 out of pocket and got back $5.98 in ECBs plus 2 bottles of BioTrue. Yay.