Typical winning stakes
I have watched quite a few of the episodes in the last couple of months and I have noticed that one or the other of the Maverick brothers often wins $5000 to $10,000 in a poker game. $5000 in 1878 would be worth $119,014 in 2013 dollars. Assuming a Maverick cleans out three other players they would be losing an average of $40,000 each in today's money. I find it hard to believe that there would be enough gamblers in the small towns the brothers traveled through who had that kind of money.