I didn't see either of these in the recent batch:
Slow Cooker 101: Master the Slow Cooker with 101 Great Recipes edited by Perrin Davis is free at
B&N and
Amazon.
Vegan 101: Master Vegan Cooking with 101 Great Recipes edited by Kate DeVivo is free at
B&N, but is still $9.99 at
Amazon (I linked it in hopes that it becomes free shortly).