Ooh, so sorry to hear your bad news.
He is a pretty fish. As for the price, even a cheap "Petshop Special" is going to end up costing close to that if you have to buy a tank, filter, heater, food, water conditioner, etc.
We just got sticker shock after adoptin a kitten for our daughter from the shelter. I had a "free" dog that I adopted from the Vet's office where I was working. The first time he got into a porcupine the Vet and I spent about two hours pulling quills, and even with the employee discount he became a very expensive "free" dog. LoL.
In short if you love them and can afford the money I don't think any pet is not worth the money.