i bought a set new from Joe Chrico (Chirco parts in Arizona)
2 New IRS Axles with CV's from T3 Auto (shortest VW made @ 389.5mm and thicker - 10mm more)
He was fantastic to deal with (might have been Dan, i can't remember which one it was)
I paid $318.70 shipped via USPS, but this was 5 years ago