Shipping cost is calculated per 1 kg of cargo and it is:
Guangzhou - Moscow 8 $ / kg, delivery time is 8-10 days
Guangzhou - St. Petersburg, Kazan, Samara, Ufa, Sochi 8.5 $ / kg, delivery time is 10-12 days
Shipping cost from Beijing lower by 0.2 $ / kg
The cost of air delivery is calculated at 165kg 1 m3, it mean that in 1 cubic meter should be 165kg.
In the case of air delivery customer gets completely cleared cargo in the shortest time.