Updated the HP numbers and the statement about commodity pricing.
Updated the days healing estimates.
Refrained from adding the cost / trade runs math because it adds a massive maintenance overhead to the tutorial.
Refraining from further rewriting because the balance is under discussion and revision at the moment.
I'm hoping to, more broadly than bases, establish a way for the devteam to dump data which can be translated into resources for players that are easily updated when changes happen. That will also result in this tutorial being updated and I'll probably have a rewrite of it while there.