Sorry, we cannot provide the specific cost calculation method for Kuailu vegetable delivery. However, I can provide some factors that may affect the cost:

1. Delivery distance: Vegetable delivery is usually charged based on distance. The farther the distance, the higher the cost.

2. Delivery weight: The weight of vegetables delivered will also affect the cost, which is usually calculated based on the delivery cost per kilogram or per catty.

3. Delivery types: Different vegetable varieties may have different delivery costs. Some special vegetables or vegetables that require special processing may have higher delivery costs than ordinary vegetables.

4. Season and market demand: In certain seasons or periods of peak market demand, vegetable delivery costs may be higher.

In general, the specific cost calculation method may vary depending on factors such as region, delivery company, delivery distance, delivery weight, delivery type, season and market demand. It is recommended that you contact your local vegetable delivery company directly to learn about the specific costs.