The WAC (wholesale acquisition cost) is the cost that distributors pay to purchase a drug from the manufacturer. Pharmacies and etc. charge a rather sizable markup on top of the WAC. According to this SEC filing from Coherus, the WAC of Loqtorzi (Toripalimab) is 8892.03 USD. This is public, verifiable information and is lower than what end users will be billed. The WAC provides the lower bound for the cost of Toripalimab in the US.
All of this is verifiable using publicly available sources. People on lemmy.world not liking the facts doesn’t make the facts themselves inaccurate.
Edit: in the best case scenario and taking many liberties with US pharmaceuticals pricing, you might see an up to 50% discount on the WAC of 8892.03 USD under 340B purchasing for low-income Americans (but also, maybe not because 340B discounts might not apply to Toripalimab). This can be viewed as the cost Medicare/Medicaid pays for the drug, I think. That would be most directly comparable to the NRDL price although NRDL is not just for low-income residents in China because of the single-payer system.