After buying this brush, I realized that I could find the same thing without the Lodge label at Walmart for about $1.50. In fact, I've seen the non-branded version of this brush at a lot of places.
This is just a generic brush. There is nothing special about it and Lodge just sourced it from whatever Chinese company makes the thing and put its logo on it.
If you want to get it as a gift to accompany a Lodge cast iron cookware piece (which are great btw), then that's fine. However, I wouldn't buy it if you are just looking for a brush to clean your cast iron pans because there's nothing special about it and it's twice the cost of something equivalent.
BTW, the bristles turn dark with repeated use but this is true for all brushes used to clean cast iron - I think it's something to do with the grease. Therefore, you can't really use the brush for anything else other than cleaning cast iron so keep that in mind.