A woman’s love.
Nah, that only costs $20 an hour in the right neighborhoods. 
Alexandrite. If you can find it. And if you can, there’s a chance someone died for it (they had to close down the Brazil mines because of the violence).
LSD comes out to about $100,000 per gram when bought in small quantities.
It seems that trade in Ambergris has been banned by international treaty so no price for it I can find. If there is an illegal market for the stuff it would have to be a particularly small market (specialty perfume makers) so I have no idea what it might cost. It used to be expensive though. If you are fortunate you might find some lying on a beach someday (it is excreted by Sperm whales). Then again given the ban on its sale you’d probably get in trouble for just picking it up…I dunno.
You don’t buy it though, you rent it.
Alright, let’s calculate the cost to buy it then:
An average of 25 dates at $50 per date = $1250
Diamond engagement ring = $5,000 average.
Cost of beer to get groom drunk enough to go through with nuptials = $17.65
Total cost = $6267.65
Average length of marriage = 10.7 years
Average cost per year = $585.76
Average cost per hour = $0.0001137
Yep, it’s way cheaper to buy outright.
Anyone beat tritium?
"Third, tritium is literally the most expensive
commercially available substance on the planet.
The amount of tritium in a high quality watch is far less than a milligram and yet costs in the neighbourhood of $10. By comparison a gram of .999 fine commodity gold is also about $10. Doing the math out that means tritium is at least a thousand times more expensive than gold."
From:
http://www.sunhelp.org/pipermail/rescue/2002-May/056294.html
(Search for “most expensive” to find the text.)
From the NASA website. Beat that.
You win no holds barred, but for this thread:
Hence the “commercially available.”
From QED`s site;
A new injector at Fermilab outside Chicago will allow that facility to increase its production tenfold, from 1.5 to 15 nanograms a year.
What a leap in production.
Hey, that’s 134.1 joules/year. That has to beat Al Bundy’s socks.
Well, I did a quick search for another thread and I found this site that will sell you ambergris for a mere 10$ per gram.
so what’s the verdict? if we’re going by weight i’ll like to know how far rare stamps (BrotherCadfael) is from the top…
Your average TBone is using a medication in the form of eyedrops that’s rather pricey. If my math is correct, it’s $2,352,933.33 per fluid ounce of the active ingredient. (Lumigan, .03%, about $60 for a 2.5ml bottle, check my math…)