there is two way of send item back from taobao.
1.
Official Taobao Cargo which after you purchase u don't have to worry on anything other than PAY.
2. Your own logistic.
After purchase (payment make), seller when send your item to your add in china (you can get the address your logistic guy).
Item arrived your logistic warehouse, you just inform your guy with local tracking number.
Logistic will pack your item and confirm you that final prices for shipping, both agree, payment done and your good is on the way to you.
Shipping cost is around
RM 18-22 per-kg (more cheaper).
Is either weight or volumetric calculation (depend which is higher, till today i only see one person who said sender have the right to choose weight or volume but he can't offer his service, if he can i make sure he can make millions on it).
Calculate the volumetric weight of your shipment
» Click to show Spoiler - click again to hide... «
Sometimes, large items with a light overall weight can be charged according to the space they take up on aircraft. In these cases, Volumetric Weight, or dimensional (Dim) weight, is used to calculate the shipment cost.
It is recommended that you calculate the Volumetric Weight for every shipment that you send, then compare this to its actual weight. The greater weight of the two is used to work out the price that we charge you.
International Volumetric Weights are calculated using the formula below:
Length x Width x Height in centimeters / 5000 = Volumetric Weight in kilograms
Actually at one time this year when shipping market was slow (option 2-own logistic) some were offering weight only, no need volumetric.