I would like to present one of the most popular online shops. “ Allegro ” is an auction service, where we can buy everything without changing the place. Starting with screws and pencils, finishing on houses and cars. Allegro is readily available for everyone, irrespective of the age. It will be sufficient to register and start buying. Allegro can be useful for us, when we need something, what we won't find on Polish shelves or for the most normal shopping, when we don't want to go out. Apart from buying things we can also sell them. Everyone can sell or buy whatever he wants. Allegro is the most popular and the best online service for sure.