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by WillAdams 17 days ago
The $3 Box, back when it was first made was made of 3 $1 cutting boards from the local Dollar Tree (I believe they're up to $1.25 now).

Additional expenses are of course the machine, tooling, workholding, electric to run the machine, and one's time, but for a hobbyist, amortized over a number of projects, that can be pretty minimal --- if one makes a _lot_ of projects. YMMV.