Found this website if you are interested in calculating the duty/taxes for importing and exporting goods in and out of different countries. Link is set to Thailand. Careful, you only get 5 free estimates per month before they charge you fees. Hope this is helpful.

http://www.dutycalculator.com/country-guides/Import-duty-taxes-when-importing-into-Thailand/

Thanks for that, for putting it up..

It's all good - just clear the cookies/cache in your browser and you'll get a lot more than 5 calculations per month. I've been using the site month in and month out to calculate the difference between Malaysia and Thailand when importing various hi-fi goodies : amplifiers and speakers mostly. Interesting to see how their respective tariff systems work - Thailand clearly believes they have a 'speaker industry' to protect despite the fact that the majority of the audio gear made in Thailand is K-Mart level crap.