I stumbled across this post through a friend today, it is very interesting. I decided to actually dig a little deeper and see if these things are as they say they are.
I was unable to find a price on human blood, penicillin, and the 3M PF-5030 (which is a refrigerant), but I got a price on everything else. Note that all of this is done using CAD and prices as of today (Sept. 20, 2009).
Using the price from here (Bloomberg, converting USD to CAD using Google) of $76.63 CAD per barrel, and the volume of a barrel (Wikipedia) of 158 987 mL you get $0.00048/mL.
By the time that gets to your car, if we use $1.00/L which is what it seems to be hovering at in Quebec, that's $0.001/mL.
This one I guesstimated the price of a bottle of water at around $1.60 for a 500mL bottle, so that makes $0.0032/mL - 6.67 times the price of the crude oil.
Also guesstimated at $2.99 for a 250mL can, giving $0.012/mL.
Using the price of the most expensive one at the SAQ called Belvedere (SAQ) which gives $42.75 for a 750mL bottle we get $0.057/mL.
Finally (since I skipped a bunch) we have HP #45, which is their normal black ink. The price is $42.77 (NCIX) for a 42mL cartridge, giving $1.02/mL.
So printer ink is 1020 times more expensive than the gas you put in your car. Yikes!
Note: These numbers are not 100% accurate since some of these have taxes factored in and others do not.