New orgs get $30.00 of starter credit, valid for 30 days, once the creating user’s email is verified. Each
person gets it once.
Promo codes add credit grants with nodus billing redeem <code>. Grants are spent before purchased credit,
soonest expiry first, and you get a reminder 7 days and 1 day before one expires.
What you pay for lists every kind of time and cost and who pays for it,
by usage segment, checked against the billing reference model on every change.