You need about 30 ug of MRNA vaccine. For Regeneron the dosage is an initial dose of 600 mg followed by 300 mg every other week. Pfizer is $19.50/dose. Moderna

You need about 30 ug of MRNA vaccine. For Regeneron the dosage is an initial dose of 600 mg followed by 300 mg every other week. Pfizer is $19.50/dose. Moderna is $15/dose. Regeneron is $2100/dose. And that's with the US govt having bought millions of doses of Regeneron.