I have a room with a minor dust issue. I'm looking at resolving that directly, but I'm also thinking of an air purifier as a temporary/cleanup measure.

I noticed this in Godfrey's. It is $199 in nz but au$30 on the Australian version website:

http://www.godfreys.co.nz/home-hero-air-washer

There are similar things on trademe $80 and up. I'm thinking of $200 max. The gold standard (asthma foundation) is a daiken at around 1k which isn't going to happen.

I'd consider something secondhand in this category if that is worthwhile. I have a preference for something I can pick up in the next few days.

Edit: There are several videos on YouTube showing 300mm box fans with 300mm filters taped to them. I'm tempted. Cost of that would be slightly over $100 and it would filter a lot of air really quickly. Could not leave it on 24/7 tho.

Any recommendations or opinions gratefully recieved.