Not on the website anymore so maybe on clearance elsewhere. This was at West Footscray (VIC). Seems to go for $30-35 at other retailers so $16 may have been their previous discounted price.
As usual the quality of fit will depend on your face size and shape. Not as comfortable or well fitting as others I've used for me personally, I think these would suit larger faces and heads. If this style fits you well you're laughing at 40c each for a proper P2 headband mask.
Cue COVID comments though I also use them sometimes for the other purposes printed on the box, remember those…
P2 is P2. If they fit well and are comfortable, they work on smoke, silica dust, asbestos, or virus-laden droplets. It does not matter.
If you wear a mask, it may as well be P2/N95. Why muck about with those blue surgical ones?