[REQUEST] Supplements for homemade food

I feel bad asking, but all of our money is going toward prescription food and prescription meds for one cat, and vet bills. We need to restock our supplements to make food for the other cats, and it's a lot at once for us. We would appreciate any help. One is an Add-On under $9 and the other we need most is $16. https://www.amazon.com/hz/wishlist/ls/3CY6MG9KZTGXC