Thanks for the comment, Michael. I did not time myself, but 7.5 s/​d is my guess for the difference between taking 5 capsules (including one of creatine; capsules are 23.5 $/​year cheaper under my assumptions) and the 4 I already take after lunch (D3, Omega 3, iodine and a multivitamin; I take B12 before breakfast). I have all the supplements in the same place, so it would not take me much time to take another capsule.
capsules are 23.5 $/​year cheaper under my assumptions
My financial cost of capsules was 3 times as high as it should be. I thought the 3 g of creatine mentioned in the nutritional composition were the amount per capsule, whereas they were the amount per 3 capsules. Now powder looks 116 $/​year cheaper than capsules for a time cost of 30 s/​d (instead of my original assumption of 20 s/​d).
I have updated to reflect using powder with the updated time cost. The updated break-even net income is 15.5 k$/​year, 1.46 (= 15.5*10^3/​(10.6*10^3)) times my original value.
Thanks for the comment, Michael. I did not time myself, but 7.5 s/​d is my guess for the difference between taking 5 capsules (including one of creatine; capsules are 23.5 $/​year cheaper under my assumptions) and the 4 I already take after lunch (D3, Omega 3, iodine and a multivitamin; I take B12 before breakfast). I have all the supplements in the same place, so it would not take me much time to take another capsule.
My financial cost of capsules was 3 times as high as it should be. I thought the 3 g of creatine mentioned in the nutritional composition were the amount per capsule, whereas they were the amount per 3 capsules. Now powder looks 116 $/​year cheaper than capsules for a time cost of 30 s/​d (instead of my original assumption of 20 s/​d).
I have updated to reflect using powder with the updated time cost. The updated break-even net income is 15.5 k$/​year, 1.46 (= 15.5*10^3/​(10.6*10^3)) times my original value.