I agree with you. I quit using Amazon late last year and it's pretty easy to change to different vendors. Hopefully more consumers do this so that vendors don't have to use the Amazon price everywhere else on the internet.
I’m not planning to leave Amazon, but I’d love to find good alternatives.
For more niche items I buy in bulk from different the manufacturer's site. To be honest it's a little more work but to help retailers it's worth it. Sometimes I have to pay for shipping but I do remember that I'm saving 130 dollars a year by not being Prime.