Weeks and weeks of back and forth have paid off. Pkhub is listed on https://aws.amazon.com/marketplace/pp/B07WV49X15 and live.
Several reasons I moved to this:
*. AWS gives pkhub the credibility it need as a security product
*. Stripe was driving me crazy (not the main reason) but a plus. I want to concentrate on security of things for pkhub not payment processing.
*. I can promote pkhub via the marketplace in many ways, one which I'm going to explore is the aws partner blogs.
An extra feature of this is that people can now pay per hour and use their aws budget to pay for their use of what essentially is a devops product.