If listing privately, advertising at a low low price (well below market) for "hassle free sale" is often not effective, and sometimes counterproductive. It draws in more of the obnoxious people. List for what it’s worth, and screen your buyers (be choosy). On the other hand, it’s also easy to misjudge the REAL market (often worse than your think), and list too high. Anyways the JC-2 is a nice unit and 900 does seem low.
Also, you mean the JC-2 preamp, not JC-1 (which is a mono amp). And IIRC there is a revision version (BP) that accounts for some of the increased MSRP. However "now going for 5.5K" sounds like an AI hallucination. These details matter when listing!
And I’m sorry but if UPS damaged your MC cart then it likely wasn’t packed properly. It must be packed separately in its own case/shell - never mounted to a tonearm! Packaging physics is undefeated - there’s a right and wrong way for every component. Fortunately, components like the JC-2 come from factory with thick form-fitting closed-cell foam (polyethylene) and double or triple-wall boxes. Nothing can move around, at all. That kind of packing is EXCELLENT and has a near 100% success rate for safe transit with UPS or FedEx. When you have that kind of packing, you’re golden to ship. I’ve even shipped up to 135 lbs VAC tube amps - you need at least 2" - 3" of premium polyethylene foam (multi-layer is best) all around, but it gets the job done. You can buy good foam on Amazon but it ain't cheap.
If you really want low hassle you can contact TMR (The Music Room) - but you’ll obviously relinquish a big chunk of its market value. Maybe try a consignment sale if not in a hurry.
I’ve done local sales but honestly despise it. Having a new stranger in the home, or arranging a meet somewhere. Ugh, no thanks. It’s higher risk IMO.

