Part in question is differential assembly with batwing, Dana 36 with 2.59:1 gears, from 1994 Corvette.
As of today, Wednesday 4/24/2019, checking eBay completed auctions (SOLD, not just expired) and sorting by most recent, there's a $450 and a $125. average $287.50.
I'm going to use $287.50 as the FMV for self-trading this part. IDK what i'm trading it for yet, but it will be something with similar FMV. any well-reasoned objections to this FMV?
seems legit - but why the giant price difference? was one sale free shipping or something? remember that shipping would have to be factored OUT of the FMV of the part.
Funny I Have Two Here, 1, I would sell Sell Cheap If You Pull it, 200 Maybe less, The Other I have Freshend up, 450ish, But It's in A challenge mobile and I would have to replace it. So your Number is Fine .
This is from a Parts seller Perspective, and Why I Wear Boots.
In reply to Robbie :
$450 was for a part that was removed 30 years ago at low mileage and has been sitting there collecting dust. $125 was kinda greasy and over 100k miles. Then there's a complete pig (ie no batwing) that sold for $224 and a couple of batwings that sold for $125 and $99.95. i sanity-checked junkyard prices via car-part.com and there are 3 listed: $550, $400, and $call. So I'm sticking with $287.50