You should be able to replae the boots alone without pulling the axle nuts/outer joints. Just disconnet at the gearbox, and you can cut off the old boots. disassemble the interior joint, then slide outer boot on before the inner boot. regrease & reassemble.
Having said that, the axles themselves are available from trakauto on rockauto for $87 a pop... I'd maybe just replace them both, as assembling the joint after replacing the boots is probably more work than just replacing everything.
https://www.rockauto.com/en/moreinfo.php?pk=12607069&cc=1388358&pt=2288&jsn=498&_nck=eAAcbbIvRAkzRlt0s9jXR52PM9fLZcic0fDSLE1mMuOjm ayPHerWk6A2R%2FbYjxMcbEin84Z%2BtSpwzO8np%2FLoyrb%2 F04QbNcxvAkJxmRFuXL0HSrrz7dvTo4HLTX%2FAwH4p6FfoXQl v%2F6zv9ZPcZOznUv89tPlarn3cC4i0UHmp3BySOowm1pXV52f qWMUMdoEmIIPzqN7SIOgvfjOyp3jHROLFns1hkjNDLI%2Bi8EO Sj5Ncs1K9pRFoBysisEd0N0kSCle3g4HkHA3U9G0LXlwR726h3 rydfavuiXP8zHdmsH%2FT0RDRUwhtFw%3D%3D