Multiple purchases will be shipped together with one postage charge.We ship worldwide by registered airmail at a standard charge of US $4(depending on weight)on all single or multiple purchases where the single/combined value is less than US$200.Where the value exceeds that figure then the Thai Post Office EMS signed for service will be used if it is available to the buyer's country.If it is not available to that country then an insurance service provided by the Thai Post Office will be offered.