Works but needs improvement

Air Purifier works pretty good. I can tell the difference in the air when its on. There are two settings, low and high. The low setting is pretty quiet and the high isn't much louder, about as much as a fan. It does have a blue night light. The Purifier includes a slot with a pad to add essential oils to diffuse while running but doesn't seem to carry the scent very strongly. The replacement filters are also kinda pricey at around $20. After you spend the cost of the Purifier I feel like its kinda high.