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Costco Members: Winix C909 4-Stage Air Purifier price history

1 price observations since September 2, 2026.

Last observed September 2, 2026

$159.99Last tracked

1 price observation since September 2, 2026.

Prices and availability can change. Confirm the final price at the retailer.

Similar deals available now

Found Aug 25, 2026

$43.19~~$99.99~~

Found Sep 1, 2026

$19.94~~$44.99~~

Found Aug 20, 2026

$49.99~~$69.99~~

Found Aug 22, 2026

$280~~$329~~