I bought a pair of the new Edelbrock E-Street Alloy heads from Summit. $US 899 for the heads, $US 460 odd for freight. Made for a cheap pair of alloy heads, although they're not Edelbrock's top shelf stuff. Didn't get pinged for Duty or GST either. Thought I would because the Invoice total was over $Oz 1,000.
Every one should note
That when you buy out of the US to make sure to get the free trade paper work sent with the items
If manufactured in the US and then you will not pay Duty
Although I would not invite scrutiny from the customs If costing is under the threshold
Keep in mind thought if you are a repeat buyer
Customs keep a large data base of who is buying and from where those purchases come from
the government is out to screw every one
Bfit