bring-and-buy sale

noun
  1. British and NZ an informal sale, often conducted for charity, to which people bring items for sale and buy those that others have brought
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012