Despite the classic PCCG somewhat-overpriced-shipping, $6 for a well received case fan with good price to performance seems pretty good. Only a deal if you're intending to purchase 5+ fans, else ~$15 shipping just for one fan completely kills it.
For shipping to Western Australia at $15 for 5 fans = $45 total, working out to $9 each fan, with the price reducing per fan for more fans ordered (10 * $6 + $17 shipping = $7.70 each)
White version also available here: https://www.pccasegear.com/products/53196/arctic-p12-pwm-120…
also a decent price on amazon for the pwm pst version value pack ($55 for 5)
how bad is the whine at around 900-1000rpm, only thing idk about preventing me from buying right away
edit: might get the co version, apparently that is hum-free! (any owners of it able to chime in?)