This set is part of the Lego Hard to Find collection. Hard to Find sets, generally very sought after by collectors, are produced in limited quantities and are not available at all Lego retailers. 

STAR WARS - REPUBLIC GUNSHIP (3292 PIECES) 75309-HF is categorised BUILDING TOYS / LEGO / STAR WARS and sold by l'Imaginaire, a store and specialised website.