You could buy
You can buy one of the following:
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You can buy all of the following:
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1 Tour of the UK Parliament
Guided tour of the Houses of Parliament, London for £11.50 (HK$136.90) -
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1 A speck of dust made of anti-hydrogen gas
A speck of dust made of anti-hydrogen gas for US$0.05 (HK$0.41)