Amazon is always pushing Prime on me, and every once in a while, they're like "no, we really want to give you free shipping, no strings attached, cancel anytime

Amazon is always pushing Prime on me, and every once in a while, they're like "no, we really want to give you free shipping, no strings attached, cancel anytime before a month is up" and I'm like "okay, if you insist" and I put it on my calendar to cancel in 30 days. I have been expecting something new and underhanded but haven't seen it yet. I'm not paranoid enough not to take advantage. But Amazon is always my last choice now. They're not the only one who clearly has algorithms to try to encourage long time customers who rarely order.