A good is scarce if there is not enough to go around when it is given away free of charge. Something like this happened with the tree giveaway. Excerpts from the article:
"Neither gray skies nor drizzle were enough to keep away the crowd that lined up for free fruit and nut trees Saturday morning at the Pearl.
More than an hour before the Jammin’ Jams Fruit and Nut Tree Adoption began, people began gathering in the parking lot of La Gloria restaurant, where organizers set up tents to give away about 900 young trees planted in black plastic pots."
"“We probably already had a couple of hundred people here well before 8 o’clock,” said Ross Hosea, city forester.
By 9:30 a.m., the line stretched beyond the parking lot and around the Koehler Garage and the Culinary Institute of America-San Antonio. The varieties of trees available included pecan, apple, apricot, fig, peach, pear, plum, pomegranate, Fuyu persimmon, improved Meyer lemon, orange and tangerine."
"Last year, about 750 trees were given away at the event. While there were more trees this year, there were also more people. Rough estimates put the number of would-be adopters at 2,000."
"Typically the most popular, the citrus trees were the first to go. As the morning went on, organizers kept the crowd informed about what trees remained available.
Adriana Segundo waited about an hour for her turn to select a tree. She didn’t get the orange tree she had hoped for, but she was pleased with a pecan."