The Pentateuch from
The Oxford Bible Commentary Series is $2.99 at
B&N and
Amazon. It's currently $18.99 elsewhere.
National Geographic's
The Gospel of Judas edited by Rodolphe Kasser, Marvin Meyer , Gregor Wurst and Francois Gaudard is $3.49 at
B&N,
Amazon and
Kobo (where it's eligible for coupons in the US).