What do you advise if i'm just 16, and they say lung transplant is the only treatment. we just can't afford it, is this really the end of it?

Some options: If the transplantation center has determined that you are a good candidate, by screening you and scheduling a visit, and it is a procedure that you would like to have, the ISHLT may be able to assist @ ishlt.org There are several centers in the U.S. performing lung transplantation, including Philadelphia, and I would advise asking your transplant center to assist in seeking a second opinion.