What are the best rates for cash, gold, and real estate?

Cash, gold and real-estate prices are all over the map, but the three currencies are often the most popular.Here are five ways to spend your money that may or may not work for you.Cash and gold: Cash: The average cost of a gold-plated credit card is $3,500.Gold: The median value of a coin-sized gold bullion coin is $1,000.The average value of gold-backed ETFs is $2,000 a year.Gold is not an invest...