A promotional box in a shop for displaying books or other items.
（商店展示图书等物品的）促销商品展示柜
Example sentencesExamples
Along with remaindered books, DVD dump bins are sources of unappreciated gems.
Price-sensitive merchandise is displayed in prominent places such as the kiosk at the entrance to the store, as well as on end caps, in dump bins, and in gondolas down the main aisles.
What, did you buy your grimoires or whatever from the dump bins at the book store?
Posters, cardboard cut-outs and dump bins make up the remaining £40,000, which seems rather a lot to us, so there were probably some other, miscellaneous games in there too.