It depends. Some Star Trek comics are officially considered canon, while others are not. It often depends on the specific storyline and its approval by the franchise's creators.
It depends. Some rare or highly sought-after Star Trek comics can be quite valuable, especially if they're in good condition and have significant collector interest.
Star Trek web comics often feature exciting space adventures and familiar characters from the franchise. They might have unique storylines and art styles.
The status of IDW Star Trek comics as canon is a bit complicated. Some are officially recognized as part of the Star Trek universe's continuity, while others are more standalone or alternate takes that don't strictly fit into the main canon.