bring-and-buy sale

noun

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