Replacing Rear Side Window on a 2005 Escalade

I reside in Cedar Rapids, Iowa where the infamous Derecho came through over this past Summer, and while my 2005 Escalade made it through mostly unscathed except for a busted rear side window. ( See picture/attachment below) Unfortunately, I did not have full coverage of this particular means of transportation. I’m curious if anyone can point me in the direction of where I can order a replacement window? The cheaper the better. Price? OEM part #? Is this something I could possibly install myself? I haven’t been to body’s shops for quotes yet. Maybe I’m better off just going that route? Anyone with any experience/advice/recommendations? Any input would be greatly appreciated!