Prime members only. Amazon with WaterdropDirect has the Waterdrop 10UA Under Sink Water Filter System for $38 - $2.60 off with coupon code WD10UA88 [Exp 7/18] = $35 with free shipping.

Helps reduce PFAS, PFOA/PFOS, lead, chlorine, heavy metals, chemical iṁpurity, sediment, other large particles, and is good for 12 months or 8000 gallons.