Which billing tools does it work with?
Stripe, Paddle, Lemon Squeezy, Chargebee and Recurly, on cloud and on self-host. Other checkouts, like Shopify, can't report sales to it yet.
Do I need a developer?
Not for Stripe Payment Links, the Pricing Table or the Buy Button. For the others, someone adds one line or one field to your checkout code. The rest happens in settings.
Do integrations cost extra?
No. Every billing integration is on every cloud plan and in self-host.
Where do I connect my billing tool on cloud?
In your workspace settings. Stripe connects with one restricted key. The others show their webhook address and a field for the secret or password.
Can I use two billing tools at once?
Yes. Each one has its own webhook address, and they all write to the same ledger.