The cheapest camera's for sale today are miles ahead of the camera you are replacing in terms of technology and power use.
I don't think you will find a camera today that takes D cells because they are now, such power misers, that AA's will last a least a season and possibly two.
There is nothing we sell at work that doesn't have IR flash, multi-pic options (still, motion), with everything from set "everything" yourself to a couple selections (game camera's for dummies type settings that are a simple click of a switch).
The two things that drive the price are "namebrand" and the number of mega-pixels.
Again, the lowest mega-pixel camera's today would have cost you a grand 5 or 10 years ago - so even the bottom end stuff can take a picture that can be blown up to poster size with great detail.
And namebrand doesn't always equal quality. The most returned "defective" camera's we sell are Bushnell's, the things are just Chinese junk like all the rest, but these seem to break at 5 or 6 times the rate of all the other brands (Simmons, Moultrie, Wildgame Innovation, SpyPoint, StealthCam etc).
I would find something on sale and go with that. If you pay more than 100 bucks you are probably buying technology that you won't need, or paying a premium for a namebrand that was produced in the same Chinese factory, with the same technology, as the lower priced alternative.
Cabela's has a Wildgame Innovations 8 megapixel camera on sale right now for 99 bucks - more than you will ever need...
(personally I use a couple of StealthCam Skout's and a Wildgame Innovation (older version of the Blade 5 now) - bought them on-sale for well under 100 bucks - I'm not brand loyal at all - whatever is cheap so I won't cry too hard if they get ripped off or die after a couple of seasons - I don't need a camera that will email video to my smart phone)
