I'm sure the Australian tax authority has kept a copy of this confession as evidence of you breaking the law. If I were you I wouldn't wear those boots outside the house for at least six months.
Exactly how is that a crime? In australia you can import anything under AUD1000 without paying GST.
The world is moving so fast these days that the man who says it can't be done is generally interrupted by someone doing it. -- E. Hubbard