Quite a decent amount as ASICs aren't cheap, and buildings/land aren't cheap either (despite this being the cheapest region in the world for this type of stuff).
Then couple this with the fact that your profits are heavily affected by market price swings.
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[ 3.8 ms ] story [ 12.0 ms ] threadThen couple this with the fact that your profits are heavily affected by market price swings.
Not the easiest business in the world I'd say :)