Goldfish: Small Bowls and Unfiltered Tanks?

Sallutations! Goldfish really do need filteration. They produce more waste then a lot of other fish. Also they live long lives. My sugestion would be to get a cheaper tank with setup from walmart. Also you could look into other tropical fish. Im not sure if your aware but bettas don't need mutch & they will live their lives happily in small spaces. But if your heart is set on goldfish it will cost you more in the long run in care & maintainence.