That contracts based on the price of some commodity or asset have been around for about as long as mankind has been trading indicates that they are pretty useful.

以商品或资产价格为基础的契约 出现的时间 几乎和人类 开始从事贸易的时间 差不多，这说明他们 很有用 。

youdao

In a knowledge-based society in which knowledge is free, attention becomes the valued commodity.

在一个以知识为基础，而知识都是免费的社会中，注意力成了有价商品。

youdao

Chinese demand for all things commodity based is one of the main reasons for price inflation in a number of these products.

FORBES: China's Resource Demand Feeding its Own Inflation

The market expects commodity based currencies like the Brazilian real to weaken at first because of the downgrade news in the U.S., but strengthen over time.

FORBES: Matter Of Time Before QE3 Sets Sail

Technology markets historically go through a natural cycle of evolving from artificially high prices during the early adoption phase to a commodity based price during its mainstream buyer phase.

FORBES: Connect