Just purchased a home. The interior doors are very outdated and some are tough to open/close so we're hoping to get new ones. I had a guy come out from Lowe's today and measure. We think pre hung doors (with frame) will be best. No clue on if they are standard size, but they range from a thin linen closet to a typical bedroom door. He was very unhelpful when it came to cost. He said someone will call me in a few days to give an estimate but I have no idea what to expect. It's 10 doors. Has anyone done a similar project that could give me insight of cost including the doors and installation?