If it's under $1000 you'll be fine but it was the wooden shoe trees that set off the alarm bells with customs. I had another pair of Galway deliver Skoaktiebolaget last time by Aus Post and there was no problems with duties.
First time using the Fedex option to ship my incoming Galway to Australia and it was a big mistake. The shoe tree was quarantine and had to be inspected with taxes and custom charges got slugged Aud $411.00. Never had this happen with the regular post.