1 ThisOldHouse.com estimates that do-it-yourself installation of a hinged shower door and panel for a walk-in shower with a 5'-wide enclosure is an easy to moderate project that takes 2-4 hours and costs $300-$500. The door and panels for a framed neo angle shower can cost $300-$1,500 or more, or $500-$2,500 installed. 2  A frameless neo angle shower can cost $700-$3,000 or more, or $1,200-$5,000 or more with installation.