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Well hell, there is definitely room for profit on this system! A few of the YouTubers I like have built systems like this. One of the better systems was from M

• ph0rque 10y ago
  That looks similar to a barrelponics system. That was my first, proof-of-concept prototype. It cost me $700 and 50 hours of work, and had a growing area of ~9 square feet. I'm sure you could get the system cheaper if you found the parts for sale, or already have them. You could also build it faster if you're really handy, have the experience, and don't make any mistakes.