eBay UK is having a 10p cheap listing day this Thursday, 6th September. Insertion fees for auction, auction-with-BIN and buy it now formats across all price tranches will be fixed at 10p. Other listing upgrade fees (including the 6p to add BIN to an auction listing) will be charged as normal. Items priced at 99p or less in media categories which have an insertion fee of 5p normally will keep to their normal pricing. There are a few other restrictions, so do read the small print before you list.