Shopping list
You can buy all of the following:
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1 Mars bar
Mars bar for £0.40 (L12.44) -
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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 (L1.08) -
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1 A grain of sand made of double gloucester
A grain of sand made of double gloucester for £0.00 (L0.00)