2003 prices
A single dose of ivermectin for a 70-kg (154-lb) adult costs about $38 (for three 6-mg pills) or about $67 for the same dose in 3-mg pills. Lindane (2 oz of 1 percent lotion) costs about $17, and permethrin (2 oz of 5 percent cream) costs about $38.
where does this link say 2003?
Or are you referring to something else?
https://www.goodrx.com/ivermectin?dosage=3mg&form=tablet&label_override=ivermectin&quantity=10