It will vary by the metal itself. For example, scrap iron & steel can go for $11 per 100 pounds, aluminum cans can go for $0.60 per pound, and #1 copper can go for $3.15 per pound ($2.65 per pound for #2 copper).
You can contact companies like CRC Scrap Metal Recycling for more info on metal prices, at: 12881 E Wade Hampton Blvd, Duncan, SC 29334, 1-864-801-1765 ext 3 (for retail public pricing).
Here's a tip: If a magnet does not stick to your metal, the metal you have is a non-ferrous metal. Many common metals, like copper, aluminum, br@ss, stainless steel and bronze are categorized as non-ferrous metals. These metals are very valuable to recycle and are worth more money at the scrap yard.
In recent news, the US federal government was drawing opposition from the steel industry and others for its proposal to commercially recycle scrap metal from Los Alamos National Laboratory and other nuclear sites. The Department of Energy recommends that scrap metal exposed on its surface to radiation be recycled if the metal is uncontaminated or if radiation levels are low enough. The scrap here would include metal from file cabinets, tools, equipment and structural steel from demolished buildings. It would be mixed with other scrap metal and melted down for use in new products.