The integration with Paddle was super easy. Their developer docs are thorough.
They have built Paddle Billing from scratch, after learning many lessons from the previous product - Paddle Classic.
Paddle Billing cover a wide range of scenarios, and has a robust data model that you can adjust to your needs.
It allows storing custom data on the different entities, so integration with your own service is easy. For example, storing references to your own users, products or accounts.
They solve all Tax issues in any country, and as they are the merchant of record, I get a single payment every once in a while which is easy to manage.
Their business-facing UI is easy to use and manage your customers and products.
They also provide buyer-facing UI so you don't have to write all the checkout UI, and all other pieces of customers-facing ui. Review collected by and hosted on G2.com.
Pricing is a little high (5%), but reasonable.
Their support always answer, but sometimes it takes a while - a day or 2. Review collected by and hosted on G2.com.
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