Integrating with the Adopets system is free of charge. However, for every successful Adoption, there is a processing fee of $5 or 5% - for transactions above $100, whichever is greater.
You can choose to pay this fee, make the adopter pay or let the adopter choose.
The minimum fee is $10 and the maximum is $10,000.
You can also receive a donation from the adopter that will be added to the total payment.