
Mine sticks quite well. But you have to remember that monitors attract dust. Even if it doesn't look like it, your monitor frame is probably dirty. I wiped mine with alcohol first, then taped the shelf, then left it for 24 hours. I have my calendar on it and it seems quite durable. I'm not sure if a piece of curved plexiglass costs $10, but there doesn't seem to be any other solution. The company that sells them should include an alcohol-based cleaning pad.

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