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Please consider evaluating the $100,000 in terms of value of your output. If your output delivered in the timeframe which $100,000 machine makes possible is not valued for more, then spend $10,000, and take 10 times as long to deliver! This is really simple economics - balance your output value with the capital invested. Follow this path. Don't complain about the potential of spending more. After all, you could have bought two machines for 200,000, and doubled your complaints!