Last year I purchased several $59 camera's from Field and Stream. Security boxes however can be pricey. Went to Lowes and found an electrical junction box for $8, removed the guts, and cut a hole in the front cover. Some camo duct tape finished it off. Add a lock and you have a $12 security box.
I used a few blocks of Styrofoam to fill in and secure the camera. Work's like a charm.
Zoom in for a better look.