Since our invoices always refer to the performance period of the previous month, it is very likely that you will still receive an invoice for December in January, for example. In addition, we always invoice e.g. warehouse costs at two-month intervals, i.e. November’s costs will be invoiced in January. It is also possible that goods from you are still found in the Amazon warehouse. If these are then sold, it may be that we still charge you the difference.