They are duplicated by other ingredients that he does use.
Your list is full of redundant/duplicate ingredients. Pick the one that is easiest to source locally.
For example, I use Dolomite or Calcitic lime that I can get locally for cheap. Oyster shell flour is a good duplicate, but it would be 5x+ more expensive for me since I would have to have it shipped.
Wet
I also use crab/crustacean meal which you do not have listed. It is also a Ca source as well as a fertilizer. Wet's right, get what you have locally available and try to minimize your cash outlay.
If you make your own castings, they'll be loaded with Ca too. My worms get fed my fertilizer amendments also. The vermicompost contains the elements in the fertilizer meals and provides additional nutritional needs to the plant/s.
It's easy to go overkill on the amendments, but you can also go with a 3-4 part fert and grow good plants. I grew out a plant from start to finish using only kelp meal and kelp tea. It's got all the nutrition a plant needs. Amino acids, hormones, enzymes, growth regulators and vitamins are in kelp meal......IMO, kelp meal is the one amendment I would never go without.
Consider using equal parts crab/alfalfa/kelp/neem seed meals as your ferts @ 2 cups cu/ft. For minerals a blend of Glacial Rock Dust or Azomite and Oyster Shell Flour at 1 cup cu/ft would cover all your bases.
Along with comfrey teas, this is what's working for me these days.
Chunk