Collins Russian Dictionary 2nd Edition © HarperCollins Publishers 2000, 1997:
first-time buyer [ˈfəːsttaɪm-] n челове́к, впервы́е покупа́ющий дом и́ли кварти́ру
* is used to mark translations which have irregular inflections. The Russian-English side of the dictionary gives inflectional information.