<Tr> <Th> Gas </Th> <Th> 2004 price (USD / m) </Th> </Tr> <Tr> <Td> Helium (industrial grade) </Td> <Td> 4.20--4.90 </Td> </Tr> <Tr> <Td> Helium (laboratory grade) </Td> <Td> 22.30--44.90 </Td> </Tr> <Tr> <Td> Argon </Td> <Td> 2.70--8.50 </Td> </Tr>

List of gas elements in the periodic table