I don't believe I have. However, I have done this cost and benefit analysis a few times for different business plans I have put together or helped others put together. From a business standpoint, I can think of more profitable business ventures. But personally, I don't think I could go without aquaponics as a hobby!

Also, the paper was put together to help sell their products. Consider the fact that you can DIY for a fraction of the price. I think we can all agree you can build a system for 10% - 20% of the cost listed in the paper I could do it for even less, mwahaha). That vastly increases the ROI in the short term. That basically means instead of taking 30 months to make your money back in food savings it will only take 3 - 6 months. NOW WE'RE TALKING!!! WELCOME TO DIY AP!!!