2 Bryan Gruley mysteries were just marked down to $3.99 each on Amazon US:
Starvation Lake, Book 1:
http://www.amazon.com/Starvation-Lak...d_typ_k_sp_1_p
The Hanging Tree, Book 2:
http://www.amazon.com/The-Hanging-Tr...d_sim_kstore_1
I haven't read them but did have them in my magical To Read Someday list. That's a very long list.