If you want to sell a specific item regardless of the available quantity, then mark it as Replenishable There is a replenishable check-box on the Product General page. When updating various channels, SellerCloud sends a fixed quantity for the replenishable products so that it consistently shows a specific available quantity. For eBay, use the FixedPriceQuantity when using the Bulk Update. When set to Replenishable it will always post the fixed price quantity for the item. For Amazon, use the FixedQuantity setting on the Amazon Properties page.When set to Replenishable, the Safety Quantity is ignored.