How long does it take for the courier to deliver the goods?

We use all express services such as BRT or DHL courier, normally in one day they deliver throughout the country and take about 2 days for the islands. For example, if your package leaves our warehouse on Wednesday and you do not live on an island, you will receive it the next day, so on Thursday. During the Christmas period, sometimes this rule does not apply because couriers are faced with an excessive amount of packages and these rules are not respected.