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 (A$18.03) -
Carl Sagan's Cosmos DVD
Inspirational and wide-appeal science series. Thirteen episodes, each one hour long. for £11.71 (A$18.36) from source -
Enough 1p coins to cover your body
Cover your body with a single layer of UK one penny coins in hexagonal close-pack formation for £12.58 (A$19.73)
Shopping list
You can buy all of the following:
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1 One cube of tap water one meter in size
One cube of tap water one meter in size for £1.37 (A$2.15) from hardcoded -
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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 (A$0.05)