Yeh I'd only buy them second hand especially in NZ and they arent perfect but I know a few 3-24 that have very likely killed more animals than most ever will in the states (culling). They get regularly zero checked with photos as proof. Sure they havent been "drop tested" but they arent short of use in our environment.
I have no reason to think the GPO would of held zero but I can say ergonomically it was trash and the reticle wasn't very good its finer in person.
Also in saying that I broke an RS1.2 by dropping it and they are considered sound. Some drops are just bad.