Koni's are just as cheap here as they are in the US - just ask me! lol...

For example:

Koni Yellow Sports Adjustable $700 for a full set including GST, depending on where you are freight is around $30 to eastern states.

Or even cheaper is the Koni STR.T shocks - direct replacement with the same valving as Yellows only non adjustable, $125 each! Cheap as!