More complex motor controllers may be used to accurately control the speed and torque of the connected motor (or motors) and may be part of closed loop control systems for precise positioning of a driven machine.
The street price for a gold bar is: 180-190 gp. The price in a specialty store is: 381 gp. If you buy from a general store, the price is 180 gp. If you sell to a general store, the price is 120 gp. In the Grand Exchange, the market price is 204 gp, 194 gp minimum, and 214 gp as the maximum price.
You can now invest any amount in gold, from 1 gram to 10 large bars, at professional bullion market prices. Click here for a detailed explanation of the cheapest, safest, and easiest way to buy gold. Gold bars come in many different shapes and sizes, and buying in bulk saves you money.