As a subscriber, one of the things I like about Kagi is how responsive the Kagi team is. I’ve reported a few bugs (4-5 maybe?) and they all got resolved fairly quickly. You can also find the founder on the Discord server talking with users. This was a breath of fresh air to me when I signed up.
Even though I don’t have Prime, Amazon’s moves are making other sites more attractive. Walmart has been pretty good recently, offering 2-3 day shipping at no additional cost in my experience, along with a better app UI/UX. Now that Amazon has upped the minimum for free shipping, the only edge it holds over Walmart is the wider selection.