Tay - do you want to update your sticky
to include the difference between shipping companies, and couriers and postal service as well?
Generally speaking, you use a shipping company only if your freight is at east 4-5 cubic metre as the custom fees (including clearance, port fee etc) are generally $300-$400 regardless of size up to a container load.
Ie, for most of the things we buy overseas - always cheaper to use a postal service, or a courier such as fedex, ups, dhl etc.