Marketplace or your own store—which model is worth it?

Marketplaces such as Amazon or Kaufland offer immediate reach and established customer trust. In return, the platforms largely determine pricing, presentation, and customer relationships.
Having your own online store allows for custom branding, direct customer relationships, and flexible pricing. Combined with a reliable fulfillment partner, you can achieve the same shipping quality as on marketplaces.
Many successful brands rely on a combination of approaches: marketplaces for reach, and their own online store for profit margins and customer loyalty. Centralized fulfillment is what makes this strategy economically viable; see also multichannel fulfillment.
It doesn't have to be a choice between the two models—with the right fulfillment infrastructure, you can run marketplaces and your own online store in parallel and profitably.