I have been looking for large enameled goldfish bowls however it was difficult to obtain one domestically and it was way too heavy and expensive to be shipped internationally. So I ended up turning to FRP (Fiber Reinforced Plastic) Bowls which recently have been more popular in Asia due to being lighter and less likely to chip or be broken during shipment.
My relatives found a wholesale factory based in Shanghai that ships large quantities of FRP bowls to Fancy Goldfish stores in Japan. I asked them to purchase one for me since they live in Shanghai and ship it to me. I recently just got it and I love it! I think the total cost of this 40cm FRP bowl was $50. They told me that the factory also had these bowls in: 20, 30, 30 (shallow fry culling tray), 40, 45, 50, 60 and 65cm. Since Jippii is still relatively small I only got a 40cm.