Resource Values
Prices on Earth circa 2006
HE3 - U.S.$1.5 MILLION / Kg
Rhodium - $5800-$5900/troy oz, $200/gram, $200,000 / kg
Platinum - $1102-$1108/troy oz , $35 / gram, $35,000 / kg
Gold - $617-624/troy oz , $20/gram, $20,000 / kg
Titanium alloy wholesales at GBP 17,000 /tonne
Yttrium - price of 99.9 % pure yttrium ingot is 229.00 € for 50 g, so about $5500 /kg
Iridium - $600 / tr-oz == $20/gram = $2,000 / kg
Tantalum - price varies a lot, lowest seen is 0.75 cents / gram, $750/kg
Copper is dirt cheap, $7000/tonne, $7 / kg