West Texas Intermediate West Texas Intermediate West Texas Intermediate (WTI), also known as Texas light sweet, is a grade of crude oil used as a benchmark in oil pricing. This grade is described as Medium crude oil because of its relatively low density, and sweet because of its low sulfur content. It is the underlying commodity of New York Mercantile Exchange's oil futures contracts. The price of WTI is often referenced in news reports on oil prices, alongside the price of Brent crude from the North Sea. Other important oil markers include the Dubai Crude, Oman Crude, Urals oil and the OPEC Reference
Value-form this means is, that if A is normally traded for B, and B is normally traded for C, then to find out how much A is worth in terms of C, we first have to convert the amounts into B (and maybe many more intermediate steps). This is obviously inefficient if many goods are traded at the same time. The practical solution in trade is therefore the emergence of a general form of value, in which the values of all kinds of bundles of commodities can be expressed in amounts of one standard commodity (or just a few standards) which