Another time travel question: how do I get rich?

[ParallelLines]

Related thread:

You're a time traveler to the late 1800s. What do you do for money?

I don’t usually do hypotheticals, but I’ve been watching a fair amount of TV westerns lately and I thought it might be an interesting topic. Sometimes when I hear the price of something on a period show I check it against an online inflation calculator to see if they were actually in the ballpark. So the cost of things like basic commodities, horses, cattle, land, etc. seems to be much less than they would cost today, but I understand basic concepts like inflation indexes and cost of living. I …