Before fully flexible tickets were very expensive, at least from Europe. We don't own several credit cards, and limits are generally low, so for me was usually no go to purchase dummy ticket for 2k+, even if I've got that money back. Since I never cared about immigration to Argentina, I had fake pdf tickets for airline companies, and it worked. They just have to tick the box, not making detective work..i agree, but maybe people cant front that kind of cash