Haha you left out some of the more fun ones...
I have no idea if this is credible or not, but hey....
human blood (processing fee) $1,514.79
GHB $2,560.00
black ink from an ink cartridge $2,701.52
mercury $3,433.33
insulin (Humulin L) $9,411.76
Chanel No.5 perfume $25,600.00
LSD $122,880.00
Thailand cobra venom² $152,835.82
scorpion venom² $38,858,507.46
http://www.cockeyed.com/science/gallon/liquid.html