Two experts from the world of antiques go head-to-head in a competition to raise money for a charity of their choice. They are challenged to buy antiques and collectibles in a different location each day, and at the end of the week the duelling dealers compete to raise the most money at a special one-off event. Once the deals are done, one expert is crowned the Put Your Money Where Your Mouth Is champion. Katherine Higgins takes on John Cameron to find out who can bag the best lots at an antiques auction.