It can literally be done by a single person. All it does is count the number of countries with visa free or visa on arrival.

But makes no stipulations to the quality of the country. Visa free access to UK, Canada, EU, Japan, China etc is not the same as visa free access to Syria, Sudan or the likes

From a purely economics standpoint, when scalpers are able to sell at a higher price, yes they are underpriced.

But doing so limits access to cultural events to only those that can afford them.

What score do you think is the cutoff to not be called?

My guess is they call you regardless of score and use the score to decide how to make the sell. They need all levels of people to stand in front of bullets and maintain a base/outpost.