You could buy
You can buy one of the following:
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Tour of the UK Parliament
Guided tour of the Houses of Parliament, London for £11.50 (HK$136.90) -
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Carl Sagan's Cosmos DVD
Inspirational and wide-appeal science series. Thirteen episodes, each one hour long. for £11.71 (HK$139.40) from source -
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Shopping list
You can buy all of the following:
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300 Cups of instant coffee
Cost per cup of instant coffee for £0.05 (HK$0.55)