These are actually out of a Toyota Vits (Toyota Yaris in Europe) but they will fit almost any model and are a bit easier to find then the AE101 clean-ace.
These air purifiers replace the standard interior light and use a 2 pin connector (and ground) for power.
They have 2 filters, a normal dust filter and an active carbon filter.
Replacing the filters is extremely straightforward, undo 2 clips and the cover will flip down for access to the filters
More information and pictures can be found here:
Price: €110,- + shipping.
Located in the Netherlands but I ship worldwide with insurance and tracking.
Simply PM me with your location for a shipping quote.