I am having two rooms knocked into one room to give me a big open plan kitchen diner (after 8 years of nagging, husband has finally agreed). We are big foodies and husband is a very good cook. Option 1 is to install a gas aga, to not only cook but to heat the room, option 2 is to put in a normal gas range that you switch on and off when needed and then install a multi fuel burner on the other side of the room. Can anyone please advise me on the gas Aga is it expensive to run, is your's reliable and also is it risky to buy a second hand Aga ?