kupowanych
Kupowanych is a form of the Polish adjective kupowany, or the passive past participle of the verb kupić (to buy). It is used to describe nouns that have been bought or are in the process of being bought. In practice, kupowanych most often appears in contexts referring to goods or items that have been purchased, rather than to the act of buying itself.
Grammatically, kupowanych is the genitive plural or accusative plural ending of the masculine personal form kupowany.
Usage and nuances: kupowanych emphasizes the state of being purchased and is common in formal or technical