Home Depot has an online store. And almost ubiquitous free shipping without any subscription.

I didn’t order those from Amazon because their search sucks, I’d have to pay for shipping or find something else to bundle into the purchase, and I don’t trust them with anything that goes on or in my body. At least with Home Depot, if I end up in the hospital because their water filters poisoned me, I can point to their name on the label and sue them.