Canadian backlist re-publisher Bev Editions, who generously gave away a bunch of stuff during Read an E-Book Week, has a number of free with coupon fiction and non-fiction books again, and is offering 50% off
The Moche Warrior in Lyn Hamilton's Arthur Ellis Award-nominated archaeological antiquarian mysteries, which I will be purchasing shortly for $2, as well as another free title in the series.
I can also recommend their freebie biography
Below the Peacock Fan: First Ladies of the Raj by Marian Fowler, which was a pretty good light overview of five female relatives of prominent officials in the Indian British Raj when I read it from the library years ago.
Linkage to their
publisher page. You may have to dig a bit to see all the books with the coupons, but there are at least 5 freebies that I counted, perhaps more.