Even presuming you aren't being totally ripped off, 50% sounds a lot of import duty for fabric! We import a lot of different stuff on a daily basis and our rule of thumb is around 30% import duty. I'm not even going to pretend I understand it, but import duty is calculated on the type of item and the number of different products in an item. For example, if we import a shovel they work out the duty on the metal and the wood handle.