Labs typically cost 0 to 15 credits. Minimum purchase is 5 credits. Unused credits expire after 6 months.
Or you can buy a monthly Advantage Subscription and get unlimited credits and take as many labs as you like. Subscriptions renew automatically (monthly or annually, depending on the subscription type) until you cancel.
If you would like to purchase more than 20,000 lab credits, please contact enterprise sales at firstname.lastname@example.org.