All Ivermectin is manufactured in India,  compounding pharmacies import from India and repackag it. Manufacturing ivermectin involves growing Avermectin in vats and then chemically separating the ivermectin. The capital costs of manufacturing in America are about 100 to 200 million dollars for a facility and enormous technical staff costs to run it, hence imported from India. 
Ditto for Fenbendazole. Mebendazole costs $1000.00 per pill, while chemically almost identical  Fenbendazole costs $1.00 per pill. 
ivermectin  12 mg pill costs about $1.20 a pill, while the pharmacy Gaetz advertises it at $5.00 a pill.
Gaetz has the right idea, but the company he uses gauges customers. This should never be about profit!
Here is a much simpler and cheaper way, this product. is indicated for animals, so the identical products can be sold OTC affordable to anyone who wants it and in fact the company gives away its products for free for those in dire need.