I usually buy my catfish pellets in bulk and spent about $50. Usually last me awhile. As far as for my exodons, I haven't bought any food for them since September. They eat flakes, pellets, and frozen bloodworms once a week. I probably spent $30 on them. I just buy whenever I'm low on any food.
I do the same. Has anyone tried ken's fish food in the bulk ? I'm starting to think I can save by getting that every month as a staple. My fish are pretty picky though... so I'm unsure if they will like it or not.
I buy my pellets whenever I'm low, they usually cost me around $50 AUD but last forever. I've had my current tub since December, and would still have over half of it if not for my cats also enjoying them and knocking them off the table while I'm turned around feeding the fish. I spend $12 AUD on bloodworms every couple of months, they're just a treat. And my goldfish eat a lot of fruit and veg, probably $10-20 AUD weekly, but we buy them with our groceries because we eat them too.