Let's check BAKEWELL:
Income is 6BTC/week, the valuation is 312BTC (I don't even bother to include difficulty adjustment). This is a standard industry valuation practice - 1x yearly revenue.
So the valuation is 0.05 per share
I should probably mention you did not account for the underlying assets in that valuation.
I make all my financials available in the third post of my thread & I try to stay as current as possible.