I want to buy the Force Awakens Luke costume separately as well as the Last Jedi Hermit Luke's head separate but the head piece is over $120 online and the costume is nowhere to be found as a separate piece.

Why is this? Should I save up instead for Luke? Not a fan of TLJ but I am one of the only people who actually liked what Rian did with Luke (bit hated what he did to him in the 3rd act i.e. why have a guy denounce his Jedi religion and then as soon as some Mary Sue appears he immediately changes his mind and announces her as the new Jedi.. anyway this isn't a film rant).