Brand new axles, no core charges. Do yourself a favor and replace the axle seals while you are down there. I've put 4,000 miles on the axles so far and they are fine. Quality seemed nice as well.
Copied from my repair spreadsheet:
$75 MasterPro Select New Axle - Driver 7/25/11 O'Rielly
$75 MasterPro Select New Axle - Passenger 7/25/11 O'Rielly
$30 NAPA Axle Seals (2) 11/28/11 NAPA
If you aren't familiar with how to get axles in and out, this is a good video with a top tip.
The tool he is using to hold onto the axle is this
Check the rest of your suspension bits while you have things apart. Wil save you from multiple alignments.