As far as possible we will attempt to get you the best service provider to get your items to you in one piece in the cheapest, fastest way, although the two are generally mutually exclusive.
We have shipped things all over the world, and our uSaul experience is that the best way to do it is to custom pack your order, and get it to one of our shipping partners to provide a quote.
The volume and weight of a selection of handmade items can be hard to predict accurately with an algorithm.
We often use DHL, who are a premium insured courier service, aand charge accordingly, although we have the benefit of a corporate partnership with them, which savings we pass on to our clients.
The Post Office Is an option, although they take 3-5 weeks, and don't provide insurance.
Other options include FedEx, Aramex, Fargo, G4S & direct airfreight (either door to door or to the nearest customs port). We also have partners who can do containers for sea freight.