You chase Apogees at your own risk. The originals are older and have suspect surrounds (aging surrounds that will cause anomalies acoustically as they deteriorate). Between the hazards of shipping and the expensive cost of repairs, one must consider carefully if it's worth it.
If deep pockets are a blessing one has, then I can see buying, even if restoration is necessary. Otherwise, forget it. The only way I'd consider an Apogee is if I knew the history/owner. Otherwise, it's a crap shoot.
Don't get me wrong, what I did hear from the used pair of Calipers I bought, I liked - except for the buzz in the bass panel! There are serious issues with pursuing such old and tricky to ship speakers. Caveat emptor.
