Any chance you could provide a link to an example product? Air purifiers seem pretty expensive, but I expect that might be due to my location
https://www.amazon.com/gp/aw/d/B01N4IRIWK
If you're looking for more features and a more known brand, Costco has these for 99, which is a pretty good deal considering their size and that they come with all extra filters.
https://www.costco.com/winix-true-hepa-4-stage-air-purifier-...
But we ran a single Bissel Air400 in a 2k sq ft area and it visibly reduced the dust you see on glass cabinets and such. We used to have to clean them about every 3 days. With that running, it was about every 2 to 3 weeks!