Where "pay" is pretty much just a symbolic amount. Same reasoning why shopping carts often have a 1€ deposit. The price is close to zero but makes a big psychological difference to actually being zero.
Relatedly, offering stuff for free on ebay/craigslist/whatever turns up some incredibly entitled choosing beggars. Offering it for a token amount gives you very different results.
Relatedly, offering stuff for free on ebay/craigslist/whatever turns up some incredibly entitled choosing beggars. Offering it for a token amount gives you very different results.