Buying more credits
Top-ups from $10.00. Needs a paid plan.
If you run out before your next allocation, top up from your account page. The minimum is $10.00 — below that, most of the charge is card processing fees.
Top-ups need a paid plan. The Free plan has no card on file and its allocation is the whole offer; to buy credits, move to a paid plan first.
Bought credits never expire, and they are spent only after your plan credits are gone.