I tested that one and several others by using them to observe a range of summer emission nebulae in 5 to 16" apertures from very poor urban sites and a good rural dark site. Wideband filters like the Celestron UHC-LPR made very minimal contribution to an observation of emission nebulae compared to narrowband filters when both were used well matched to the nebula's emission spectrum. I never use them and use good narrowband nebular filters regularly and often at large and small exit pupils. Wideband nebula filters have zero value to my observing.
A wideband filter is a very poor choice for a first or only UHC or UHC-type filter if the goal is to increase the apparent contrast of an appropriately matched nebular object. If you're going to carry many filters then you may be one who finds use for a wideband. I carry Lumicon UHC (2, matched for binoculars), Lumicon Gen 3 O-III, Thousand Oaks H-Beta and a DGM-NPB to the field and have never once wished for a wideband filter to use in an observation.
Buy the Lumicon, TV or Astronomik. They work better.