I would be inclined to believe that usage of LL via the CSP, would be paid for. The Drs administering it will bill for their services and unless the recipient(s) are in a sanctioned trial, it stands to reason that the "drug" wouldn't be free either (as opposed to no cost to patients in a trial). The other reason that I believe it will be paid for comes from the interview most of us have seen: https://youtu.be/MrhM6803ex8
where they went into pricing in some detail.
(If this is already widely held to be fact, then just ignore my ramblings.)