The light is bright enough to light up a crawl space or a small room well.
The battery will need to charge overnight and given the battery life, it'll probably need to charge at least every other night if it's being used daily. I use it on the highest setting and seem to get less than 5 hours out of it.
Calling the magnets strong is a wild over estimation. They will hold the light but it doesn't take much to dislodge it and given every thing else is flimsy plastic, you certainly shouldn't knock it down.
Overall I'd say it's completely worth the 25 or 26 dollars I paid, but it's certainly not worth more than that.