The total amount depends on your current remuneration per session, number of sessions included in the package as well as the final decision on the candidate hiring process at their target company.
Best explained through an example.
[Sample]: Interview package for Google PM: 300 USD, 5 sessions
Candidate takes 2 sessions but is unable to pass the telephone interview.
They don’t need more sessions and cancel the package.
In this scenario, the candidate is refunded unused sessions, so the expert receives 120 USD
Candidate takes all the 5 sessions, and goes till the onsite rounds, but unfortunately doesn’t receive an offer.
In this scenario, the expert receives 300 USD
Candidate takes all the 5 sessions, and goes till the onsite rounds, and receives an offer.
In this case, the expert receives 300 USD + 60 USD (20% additional bonus) = 360 USD