How much can I expect to spend on a 8 3/4" rear end?

if you can be patient and take your time you can get all the parts you need for fairly cheap, i took my time and sourced most of my parts individually
489 case 3.91 gears sure grip from craigslist - $350
63 b body housing with a body perches from ebay - $200
new axles from dr diff- $300
all in it probably cost me around a grand once i got all the odds and ends but didnt seem to bad in my book and it was fun slapping it together anyways