1. I refuse to pay US$ 20-30 shipping and wait 6-8 weeks to get plastic baggies just to please the TSA. Give me a break. There is nothing superior about US-purchased baggies versus our non-square ones, or the non-disposable one, or a non-zip top (unless of course they now plan to keep us safe against leaks).
2. Amazon does not sell taxable products abroad - mostly just books can be bought from Amazon here. Many other countries, like Canada, have separate Amazon sites, with a different, shorter, product list.