Maybe it's time you looked into the tallow market.
The tallow/grease/lard complex has been traded for five thousand years:
Honey I'm home!
Hi dear, anything new in tallow?
Nope. Same ol', same ol'.
Here's a long term forecast for tallow:
Figure 1: Tallow and Crude Oil Prices: New Zealand Dollars per Litre
Disclaimer: They didn't do so well on the oil forecast.
Regardless, my guess is that the chart will end up looking like this:
Did you know chefs have been sculpting tallow for over 300 years?
This set of 6 tools is excellent for smoothing, contouring and detailing large sculptures with big surface areas. Sharpened ribbons of stainless steel are secured into hard wood handles with metal grommets.
Tallow is also a town in Ireland.
From the Waterford County Museum:
Tallow : An Outline History
Very little is known about the history of Tallow, probably because of its situation,
and the poverty of its early inhabitants attracted none of the warriors of the past, from whose exploits and daring deeds, history is made....
Here's the ePodunk entry.