With gold prices historically high--today's morning price was nearly $1,100--it's tempting to heed those radio and TV ads to trade your unwanted gold jewelry for cash. Earlier this year, Consumer Reports sent its mystery shoppers to price gold jewelry at pawn shops and jewelry stores in three states, and through three mail-in gold-buying companies: Cash4Gold, GoldPaq, and GoldKit. Click here for the prices we got, and advice on getting the most for your jewelry.