Mine are in the boxes. I used to tell myself they were backups in case the after-market cooler dies. I guess you could sell them at the recycle places.
I actually used mine until I got my Hyper 212. Its currently in box/closet as I just moved my wife off of S939 and only S775. I might upgrade her stock cooler with mine as its slightly better, or just sell on CL for $5.