Help with cost prices

I need help with monthly costs for animals so we can start budgeting for them. If anyone else has similar numbers then I’d really like your input on the prices online told me. This is a rough plan of what animals we plan to have. We have a family of four for reference. 3 dairy goats- 2 does and one buck. Online said anywhere from $15-$500/ month 10-15 egg laying ducks- online said $200-$500/month 4 rabbits- 4 does and 2 bucks. Online said $80-$200/ month Id also like to keep a fish pond and a lobster or crab pond but I don’t know how reasonable that is so any input on that would be nice as well.