Here are some larger on-market -80 class medical shippers: https://www.thermosafe.com/files/Product_Sheets/DurablesforHealthcare.pdf https://www.thermosafe.com/

Here are some larger on-market -80 class medical shippers: https://www.thermosafe.com/files/Product_Sheets/DurablesforHealthcare.pdf https://www.thermosafe.com/files/Product_Sheets/DurablesforH... Guessing by eye, you can fit at least several hundred, up to low thousands of doses in each shipper. The inner volumes on these are pretty large, but a good chunk of it will be taken up by dry-ice.