I've given up on finding a compact refrigerator that will do the job of being a self-contained fermentation chamber at an affordable price point. Instead, I've determined I am going to go with the 7 cubic foot GE chest freezer from Sam's Club. I should be able to use it unmodified to start with, and will last me until I am ready to do a more "permanent" fermentation chamber setup. I figure that I can then use it as either a small keezer or for long term storage for pellet hops and other freezable brew stuffs.
Would love for someone to show me that my own research and carrying of tape measure into all the big box home improvement and appliance stores was missing something, though.