It looks like lulu.com is out to spoil each of us, lately. They sent out another offer to get something for free. When you go to their website, and select 4 books, you get one of them for free when using a promotion code:
So, if you are interested in purchasing paper books from lulu.com, for instance some of Hilda the Wicked Witch, you can save money using the code “shamrock305eu”. Until the 15th of this month.