Worth investing in an air purifier?

I live in an apartment in the middle of the city. My room gets dusty really easily and I have to dust everyday. I don’t have any allergies or asthma problems. My question is, is it worth investing in a good air purifier ( e.g.> 0, HEPA filtration etc, or is it good enough to buy a cheaper air purifier(0) with no HEPA filtration, just for the sake of keeping my room dust-free?