Up until now, all priducts under €150 don't incur import tariffs, but changes from the 1st July will see tariffs or custom levies on all products. The fees will be added per category of product shipped, not the number of parcels, so it's important to build in the additional costs and know how to calculate them, as each member state can have their own rules and fees. You can sign up for free access to this 4 minute explainer video from the UK's Department of Business and Trade (DBT): https://www.business.gov.uk/business-academy/videos/eu-union-custom-code-reforms-explained-july-1st-2026-2038/ and the official fees page is here: https://www.business.gov.uk/campaign/europe/european-union-eu-regulations/