I find it laughable that depreciation is considered a factor in total costs. Sure on a commercial level it's relevant but for anyone doing it as a hobby it's pointless. Other than possible resale if/when someone purchases a new model machine the monetary value of the machine has no bearing on the average maker/hobbyist/consumer/etc. with a printer on their desk. I also wonder about the "several ounces" thing since I'd be willing to bet that the majority of the baubles that seem to get printed are nowhere near that weight.