All the filters are around that price and are very similar. You can build your own with the bigger filters and a discharge pump for around $200-$250. I posted a filter and a layout on how to build.
There is another filter out there about the same price but also incorporates the paper option on the top but that is a waste IMO
There is another filter out there about the same price but also incorporates the paper option on the top but that is a waste IMO