[BuffaloJack]

OK, and how much does 8 grams of Thorium cost?

[central_va]

Thorium is a naturally occurring, slightly radioactive metal. It is estimated to be about three to four times more abundant than uranium in the Earth’s crust. Prices aren’t available as it’s not for sale.

[Calvin Locke]

Depends on how pure you need it. I bet that you can still find thorium glass replacement mantles for Coleman lanterns.

Coleman no longer uses thorium in their product, but I'd bet the cheapo replacement ones do.

[Pollster1]

http://www.amazon.com/Buck-Scientific-Inc-Standard-Solution/dp/B00CM21TGS/ref=sr_1_1?s=industrial&ie=UTF8&qid=1394827828&sr=1-1&keywords=thorium

Take it out of solution ($65 for 1,000 ppm in 500 ml of 2% HNO3), and you can get 8 grams for a whole lot less than gasoline for life (challenges ignored intentionally).

[null and void]

OK, and how much does 8 grams of Thorium cost?

"Today, thorium is relatively expensive - about $5,000 per kilogram. However, this is only because of there is currently little demand for thorium, so as a specialty metal, it is expensive. But there is 4 times as much thorium in the earth’s crust as there is uranium, and uranium is only $40/kg. If thorium starts to be mined en masse, its cost could drop to as low as $10/kg."

$40 at today's prices...

[piytar]

About $0.50. It’s CHEAP.