This paper aims to describe COVID-19 as a disease and the impact it has from an economic point of view. COVID-19 is a pandemic unique in economic history in terms of the speed of its occurrence, global scope and long-term and unwanted consequences. The epidemic has changed people's daily routines in ways that were unimaginable until then. This paper aims to demonstrate how the COVID-19 pandemic has changed the buying habits of consumers. The paper presents a comprehensive overview of the relevant studies so far and highlights existing knowledge about the epidemiological, pathogenetic and clinical features of the virus and the disease it causes, with reference to the impact of the pandemic on marketing and sales as well as the perspective of the pandemic. The aim of this paper is to investigate and collect data, information, attitudes and opinions of respondents about their shopping habits before and during the COVID-19 pandemic with an emphasis on online shopping and card payments. With this in mind, research was conducted using a questionnaire that would indicate changes in consumer behavior, some of which will most likely have a lasting effect. The results of the research lead to conclusion that the majority of respondents, or consumers, when comparing their buying habits in the period during the COVID-19 pandemic and the period before the pandemic, are more inclined towards online shopping and using cards to pay for their purchases rather than using cash payments. Therefore, delivery, contactless shopping and cashless transactions are currently in the focus of sellers. Once the pandemic is over, it is likely to have long-lasting effects on the entire economy, but also on society as a whole.