Pennies (at least those made after 1982) weigh 2.5 grams, nickels weigh 5 grams, dimes weigh 2.268 grams, and quarters weigh 5.67 grams. One of each gives us a total of 15.438 grams. There are approximately 453.59 grams in a pound. Therefore, if an equal number of coins comprise a pound, there will be 29.38 of each. Since you can't have 0.38 of a coin, we'll round to 29. Multiplying by the value of each, the total value of the coins is $11.89. [ETA: X 25 = $297.25.]
So my final answer is 297.25