VocabularyStickers provides paid tracked shipping with shipping providers depending on the delivery location:

The time to receive your stickers varies based on the destination country. We dispatch the stickers from the Netherlands (Europe). This means that:

• It takes about 3-6 days for the stickers to arrive within Europe.
• It takes about 6-12 days for the stickers to arrive outside of Europe. Based on the destination country, the arrival might sometimes take longer due to the customs procedures. However, due to the low value of the shipped goods, this occurs only very rarely.