I bought Cardone axles off of rock auto for about the same price - they've only been installed a few months but they looked alright when they went in. Also put in some DSS axles from auto house Aye Zee (about twice this price) back in the summer - I had to remove one trailing arm bolt to get them in because they didn't articulate quite as far as the originals, but they're holding up fine so far.

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'82 300CD
"Pearl", the very first turbo diesel 123 coupe
Totaled 11/23/18, rebuild in progress.
'85 300TD, "Artemis".
'78 300D euro, "Ol' Red", mostly retired.
'85 300D, "Gandalf".