Midway apparantely has an agreement with GSM to sell the stealth cams well under msrp. They have been at that price since they arrived at Midway.
I bought one of the pxg n36 models a month ago. It hasn't gone into the woods yet, but it functioned perfectly while set up inside my house and picture quality is very good. I think it will be a viable alternative to more expensive cameras, however, it is a model where the entire front door opens, and I have concerns moisture from leaking seals may be an issue after extended time in the field.