Ha, those psoriasis treatments are garbage compared with the promise of Prurisol if it works the same on humans. Like comparing leaches with open heart surgery.
It is not yet proven on humans, that is the fact and why CTIX is around $1, but if it is, it will indeed be a blockbuster and major relief for the sufferers of that nasty condition.
Wikipedia will need some serious updating should the prurisol trial live up to expectations for CTIX.