The drug is based on weight, I just have to point out. There is the two-year-old who takes Procysbi for $56,000 a year versus Olivia who takes Cystagon at $18,000 a year. If Olivia were on Procysbi, she would have to take a higher dose, which would result in more money.
The compounded eye drops that have been safe, effective and on the market for years are $3,000 a year. The new drops are $120,000 a year. Again, they do offer easier compliance, but the drug is the same.