Product review (5 stars): Depends on what you need
This filter is designated to comply with NSF 42 standard, which deals mostly with taste.  It removes chlorine from the water which makes it taste better.

Don't confuse this filter with the more expensive LG filter which complies with the NSF 42 and NSF 53 standard.  The NSF 53 standard is a bit more stringent and takes out chlorine as well as a variety of heavy metal contaminants.

So, in short, this filter is cheaper than the official LG filter but that's largely because it doesn't comply with the more stringent NSF 53 standard.  That said, all water in the US is potable and tested at the treatment plant to make sure that its safe to drink so some people consider water filtration excessive and a waste of time and if you're of that mind then this is a great filter that removes some of the chlorine and makes the water taste better.

It's nice to have the option to not pay for a more expensive filter.  Just know what you're buying.