An increase in the price of an Australian visa might make it more difficult for graduates to stay in the nation after they complete their degree.Credit: Bianca De Marchi /AAP/Alamy On 1 March, the Australian Department of Home Affairs said that the fee charged for higher-education temporary graduate visas (a category called subclass 485) would double with immediate effect, from Aus$2,300 (around US$1,600) to Aus$4,600. The visa allows international students who have graduated from Australian universities less than six months previously to remain in the nation for a few years (usually two or three depending on the type of qualification they receive) after completing their degrees. It lets graduates either continue their studies or find work and can serve as a bridge for those transitioning from PhD programmes to postdoctoral positions or into other research careers.…