I bought one off the Yamaha web site. Called in part number to my local dealer, and they called when it arrived in a few days, and I picked it up there. Fits perfectly, 5 screws, and takes 5 mins or less to switch back and forth with standard windshield. I paid $129.95.
I like it. Still looks good, and blocks a whole lot more wind. I still go back and forth, but thinking about leaving it on all the time.