Yes and No
YES: if your item sells either on eBay, Etsy, Shopify, Woo, Vinted, Depop, ASOS or Vestiaire. it will be automatically delisted from other marketplaces
NO: if your item sells on facebook, you have to delist your items manually after a sale.
How long does it take? approximately 5 minutes after you have sold an item, We attempt to delist the item 3 times for each platform.