re:customs tax/duties. based on my experience basta may invoice from BOC tama naman ang computation nila depende sa declaration and type nung items(computer part,electronics parts etc etc), please do take note that different items has different tax/duties table. e.g. iba duties ng luxury bags compare sa mga electronics items,ang kailangang bantayan is yung mga add'l charges ng courier like processing fee,storage fee,may na experience ako dati meron pa special handling fee sa invoice from fedex,buti na lang may kakilala so na reverse. i had more luck with UPS, got a shipment from china for amp kits in a 15kg box,arrived at my doorstep after 5 days and no additional charges,no tax/duties etc etc,basta binigay na lang sakin yung box at pumirma ako hehehehhehe.