I used aftermarket Advanced Auto($74.99) axles over 20K miles ago.
Had a hard time seating the shaft into transfer case like Charlie said, but once I figured out what I was doing wrong was a snap.
No vibration split boots, so far.
Had to remove recently to replace oil seal on transfer case.

Remove the complete axle shaft with hub and take to a shop to press out.
Should cost no more than $45.
YMMV, I paid $15/side.

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