Realize that we are not experienced in EU trademark law & the proper course would be to speak to a lawyer who does specialize in EU trademark law. So take all responses with a grain of salt. That said, I would ditto Cornerstone's comments. Generally, it is not worth their lawyers' time to pursue a single person over a relatively small value. They really want to go after dealers & others who import large quantities of counterfeit goods. For the 'small fish' like you, they assume you do not have a lawyer, so 1 or 2 scary letters are often enough to get people to pay. If you do not pay, they may try sending a 2nd or 3rd letter before moving onto the next target. & like Cornerstone said, best not to post documents &/or personal or identifiable information online.