Starting vintage collections

Hi everyone, I had the luck of going to ‘The Royal Mail Hotel’ in Dunkeld, Grampians, Victoria, Australia. Huge wine collection and one of the somms tips was to try and collect and taste differences from top global vineyards every year. Anyone here from Australia know of one place to go to get to these wines and purchase annually? Online or shopfront? Especially instead of getting sent heaps of emails after either set of hemispheric vintages.