Crack in the screen. Is it worth getting fixed?

It depends on the screen size and the availability of the new screen. Some manufacturers and repair facilities have access to screens and the cost can be almost as much as a new monitor, and sometimes, the cost can be much more.

A good trick is to find a similar type display that's not working because of the power supply or video board and swap it out with your parts. You can buy a junked out monitor, or non-functioning display from eBay. That will save you some time and money if you REALLY want to repair it, since non-functioning units usually sell for a fraction of what they're worth working.

Conversely, you can sell your broken screen monitor or recycle it too.

No, not at all, the screen will cost you moren than the new monitor.