1. SSR out of 60-70draws, thats 1.5% purple appearance rate which is half as stated.
2. The price for star coin weren't halved, jewel given weren't doubled, meaning resource required for one new SSR kami has been increased by 100%
3. meaning you pay double the price while thinking its the usual.
Out of those 5SSR how many are kamihime weapon again?
That toolbox you mentioned says about 1.5% is the rate for SSR kamihime, now if you include eidolon with your rate, it would be 0.75% depending on kamihime you already had it can only go lower (dupes).