Yep.... been there.
I really wanted this, a year ago, still no stock;
Mopar 8 3/4" (8.75) Eaton Truetrac Differential
I settled for this, so far happy, and I've not heard complaints from others.
$595.00.... a lot more than you are talking, yet not $800-1,000 either, and IN-STOCK;
Mopar 8 3/4"...