そんなかんじなので、自分のスキルアップのために開発を請け負ったってとこですね。
こんな外から水をあげるだけの簡単なシステムでも、まじめに企業に依頼したら百万単位でかかりそうです。

Since that was the case, it was one of those things where you undertake a development to improve your own skills. Even for such a simple system as this for providing externally water, I hear it would cost into the millions of yen if you seriously commissioned a company to do it.