No, you cannot buy tickets on site because there is no admission fee to enter the Central Den Helder Gallery. It is a free-access shopping center.
As a public shopping mall, the Central Den Helder Gallery does not charge an entrance fee, and therefore, no tickets are required or sold. Visitors can walk in freely during opening hours. The concept of purchasing tickets does not apply to this type of commercial establishment.
Any transactions within the gallery relate solely to purchases made at individual stores for goods or services. There are no associated 'attraction' costs. Parking, if applicable, would be handled separately at nearby parking facilities.