The $99 door glass pieces at Ecklers include the metal "runner" channel/bar attached to the glass (and are assembled for left door use or right door use).
The less expensive door glass pieces at Ecklers ($38-$50, depending on color) are just the glass (and can be used on either side, with your runner channel/bar).
You will need to clean your metal channel and use glass-setting tape (or modern equivalent) to set the glass into your runner channel/bar.
