Hi @elitmik thanks for this question, and sorry you didn’t get any responses until now.
AFAIK, you need to have enough deposited to cover for the (incredibly unlikely) possibility that all 100 Orchestrators receive a winning Probabilistic Micropayment ticket from you at the same time. So, given that a ticket’s face value currently runs around 0.18 ETH, this equates to 18 ETH.
Yondon gives a brief explainer here including an assessment of how things might evolve when Livepeer migrates to L2.