Dang. Wish that I was finalizing a Kickstarter today... although for you it might be a good time to get caught up with some books you're missing. Just saying.
Lulu has free shipping today. Here's the e-mail they sent me...
It's everyone's favorite discount - free mail shipping. That's right, the books you want delivered free. Here's a tip to save money and make it easier on your postman, divide your larger deliveries into smaller orders.
Today only, enter code GLOSHIP75 at checkout and get free mail shipping. Expires tonight, March 22 at 11:59 PM. Remember, coupon codes are CASE-SENSITIVE.