The cost of FBA (Fulfillment by Amazon) warehousing outsourcing depends on several factors, including:

1. Storage fees: FBA warehousing services charge different storage fees based on each SKU, usually calculated per cubic foot (CF). Storage fees depend on factors such as the type, size, and weight of the goods you store.

2. Pickup fees: If you need to pick up inventory from your warehouse and ship it to the FBA warehouse, you may have to pay a pickup fee.

3. Delivery fees: FBA warehousing services will be responsible for sending your products from the FBA warehouse to the customer and charge a delivery fee.

4. Storage time fees: If your inventory exceeds the specified storage period in the FBA warehouse, you may have to pay additional storage time fees.

5. Other fees: FBA warehousing services may also charge other fees, such as long-term storage fees, return fees, redirection fees, etc.

Therefore, the cost of FBA warehousing outsourcing varies from case to case. You can get more detailed information by logging on to the official website of FBA warehousing service or contacting Amazon customer service.