I ordered some seeds off Amazon from what I thought was a local seller for a regional plant. The seeds arrived months later, well after planting season, from K

I ordered some seeds off Amazon from what I thought was a local seller for a regional plant. The seeds arrived months later, well after planting season, from Kazakhstan. The customs declaration called them plastic beads, but they were definitely seeds. I destroyed them, because I couldn't know for sure they really were what they said they were - seems unlikely a niche regional American plant would be available in Kazakhstan. Would Australia really be able to stop these cases where they lie on the customs form?