PRI's The World Published by PRI's The World Rio's best café lets you pay what you want Listen Queue Download this audio Want to embed this player? Use the code below. More info. <iframe frameborder="0" scrolling="no" height="130" width="100%" src="https://www.wnyc.org/widgets/ondemand_player/wnyc/#file=/audio/json/726608/&share=1"></iframe> Share on Facebook Share on Twitter Email a Friend There are no cashiers. No cash registers. No computers to ring up bills and no credit card machines. Instead, there is just a bowl, into which people drop voluntary cash amounts. Remarkably, the honor system is working, says Curto Café’s owner.