a supply of goods kept on hand for sale to customers by a merchant, distributor, manufacturer, etc.; inventory. 2. a quantity of something accumulated, as for future use: a stock of provisions.
1 The cost of decomposed granite is between $35 and $50 per cubic yard. 2  The average cost of crushed granite gravel is $60 per cubic yard. 3  The cost of pea gravel is about $50 per cubic yard. 4  The cost of river rocks can be as low as $0.05 per pound.  Mexican beach pebbles average more than $700 per ton.
That's all well and good, true but not, as Mexico's crude costs about $10 a barrel to produce and the market is trading now around $50. The REAL cause is the 67% fall of the peso against the dollar since June of 2014, and 22% this year. Oil has replaced gold as the trade standard and that trade standard is priced in US dollars. In January of 2016, a barrel cost $33.62 USD or at 17.85:1 or $600 pesos per barrel.