![[Refurbished] Winix C535 3-Stage True HEPA Air Purifier with PlasmaWave® Technology - $ 81 + tax + Free shipping](https://static.slickdealscdn.com/attachment//7/9/4/5/1/9/300x300/13142203.thumb)
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If you prefer the C535 versus the C545 being sold at Costco for $ 20 more, you can use coupon SAVE10 to bring down the refurbished C535 to $ 80.99 + tax and it comes with free shipping. Unfortunately, it does not work on the C545 but may work on other models.