4. Section 6 of the Principal Act is amended—
(a) by omitting from subparagraph (1) (c) (i) “forty dollars” and substituting “the amount determined by the Minister by notice in the Gazette for the purposes of this subparagraph”; and
(b) by adding at the end the following subsection:
“(3) A notice under subparagraph (1) (c) (i) is a disallowable instrument for the purposes of section 10 of the Subordinate Laws Act 1989 .”.