"I don't know that this is true"
I do having been told that by the Sec. of Transportation and the fact that she had the comandante arrested and jailed.
Also, the amount of mordita is proportional to the cost of living in the area.
In the 70s, the loss or missplaced visa was a $10 cost in San Jose and $20 in La Paz.
On a trip down to Cabo 2 of the guests on the boat wanted to leave a couple of days after we arrived. I had given all the bost papers and visas to an "agent" to process and get our fuel permit.
I took to the imigration officer and the muy grande problema was $10 each for new visas.
2 others rented a car and drove to La Paz and since the cost of living is much higher there it cost them $20 each for new visas.