Ahmed hired Shlomo to act as his sales agent in his jewelry store. Ahmed authorized Shlomo actual express authority to sell items of jewelry up to $1,000 without checking with him; however, if the price was over $1,000, Shlomo was to check with Ahmed before making a sale. One day, a customer wanted to buy a necklace for $1,500 and Shlomo sold it to her without first checking with Ahmed. When Ahmed learned of this, he was upset because the price was a mistake; it should have been marked at $3,000. Ahmed wants the customer to return the necklace. Is the customer required to return the necklace in this case