I have the chance to buy an old Centurian that looks like it is in good shape. The owner has no idea of what he should ask for it. What do you think the value of this bike is? I owned three Centurians in the past and still have some of the tools and parts for the drive system and would like to own it and ride it for old times sake. Also I would like to have a steel framed bike again. My current bike is a Trek 5200T and is the most uncomfortable bike that I have ever owned.