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.
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.