That's pretty much what I did, too. I can't imagine spending anywhere near $109 just for a monitor hood. I'm sure mine cost less than $5, and it works just fine.
I made my own, finally. I got a black foam-core board and cut it out into 3 parts, used lots of gaffer's tape, and Velcro spots to hold it onto the monitor. The board is light enough so everything holds. I put a slit in the center so I can use my colorimeter. Thanks again for the replies.