I have a flight of 13 stairs in my townhouse. The first 5 have an unattractive rail/wall. I want to get away from the apartment look. I'd love to pull them out and replace them with a nice treaded and ballustraded flight. My question is, is this extremely costly? I live in suburban Philadelphia, PA. I've looked for the cost of materials online but haven't found info on pre-made stairs which I saw go in around here (wall look). I'm wondering how long this takes as in the labor which is usually the catch. Other question is, someone said the stairs here are shot and they were replaced in some rehabed units. What does this mean? Can stairs actually wear out??? Seems you see 100 year old stairs creaking away in historic type places. Mine creak. Isn't that simply loose boards? Stringers don't go do they? Thanks for any input. Just trying to get a feel for things. It would make a big difference around here.