You do not automatically get zero duties if you import from a retailer in the EURO zone. You need a EURO1 certificate and you can only get one if the frame and components were manufactured in the EU. If Chain Reaction is selling a bike that was manufactured in China then the zero import does not apply and you will have to pay the import duty. Key is country of origin not country you are shipping from. If not distributors will simply divert their shipments via a EU country to skip the duties, which will clearly not work.