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Best Answer: Usually common Betta's are very cheap. Ranging from $2.00 to $7.00, but they're are two very expensive breeds. The Western Blue devil is around $600.00 and the Marine Betta is about $70.00.
Feeding the fish with fish flakes â this could be the least expensive food you will ever have to buy for your betta fish. You can feed them with this food and watch their reaction first before you can keep using the same food. Some reports have shown that the betta fish do not always like the fish flakes. Use betta fish pellets â it is not just any type of fish pellets, they have to be specifically made for betta fish.