Not sure how the seller arrived at this price. It has no glass and has rust. I don’t see this fitting on a CJ-3B.
“Military Jeep Cab.
Fits 1941 — 1954
Made by Sears & Roebuck
Fits also MB Jeep, Ford Jeep, CJ2A and CJ3B Models.
Will need straight glass.
$ 1,295 or B/O + Shipping”