Purpose – Examination of Pro-Environmental Purchasing Behaviour (PPB) and its potential components. Investigation of the number and the size of relevant consumer segments. Determining the factors able to describe the segment of frequent pro-environmental purchasers. This paper aims to discuss these issues. Design/methodology/approach – Investigation of PPB as a total multi-item variable. Disclosure of the PPB components. Examination of the Purchase component and disclosure of its clusters. Focus on the cluster of frequent purchasers. Estimation of the demographic, attitudinal and psychographic variables able to describe and predict these consumers. Findings – Two components of PPB were found, namely Conservation (high consumer engagement in this) and Purchase (low consumer engagement in this). Inside the Purchase component of PPB three clusters were found, indicating, respectively, low, average and relatively high consumers’ involvement. Consumers in Cluster 3 (frequent pro-environmental purchasers) are fewer than in the past. They were found to be negatively influenced by environmental unconcern attitudes and Materialism, while they were positively affected by locus of control over politics and Universalism. Research limitations/implications – No demographic profile of frequent purchasers. Geographical area limited (a potential) generalisation of results. Social desirability effect. Future research with reference to evolutions in pro-environmental post-purchasing or non-purchasing behaviours during the years of economic crisis. Practical implications – Fewer consumers would buy ecological products if these were not comparable enough with the conventional products in terms of price and efficacy. Originality/value – First effort to explore the impact of the economic crisis on PPB in Greece. Encompassed new categories of ecological products. Revealed two components inside PPB (Purchase and Conservation) as well as number and size of consumer segments inside the Purchase component. Formulation of a partial profile of the frequent pro-environmental purchasers. Impact of Universalism on PPB was for the first time examined.