Hartzell a.d.
Ryan,
On my c172, the last one I had was 250 bucks iirc. Hardest part is often the logistics, not the test itself. Having the old style hub on a certified aircraft I found to be a pita.
I have a new style hub now, and the old hub in a parts bin. However, on an exp., I'd trust a older style hub if I knew it had a good history. Unfortunately, history can be hard to determine. But, you could ask for an IRAN, have them do careful NDT while it's apart. If it looked good, happily fly behind it, watch for grease, keep a close eye on it and just fly it.
For me, there are maybe too many variables that have some price effect, but generally, I'd be ok with a final cost of maybe one half of new. If it was going to be more than that, maybe not.
__________________
Stan
1990 RV-3 (now apart, upgrades in the works)
1959 C172 O-360
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