$100 isnt a bad price, but just keep in mind how long the rebuilt (they are prolly just reground and slapped back together) ones might last. There is a local shop here in town that does them for $40 a joint. The guy grinds the joints down, installs new larger balls with new gates, etc. Raxles uses all new joints, NOT rebuilt.
I've done business with Marty at Raxles a few times, 3 to be exact. 1st axle was an OE replacement, and it just didn't hold up to my suspension setup. So, he then developed and cross referenced VW Euro OE parts and custom built the 1st heavy duty axles for my car. I was the test mule, and so far so good. I've spent close to 6 months on the 1st heavy duty one, and now recently changed the other side to heavy duty as well as it was showing signs of clicking. I've now gone close to 10k miles on the heavy's and are going strong.
Suspension:
CPP Upper Adjustable control arms
KW V1's lowered about 2.75" all around
18x8 225 40 1 Yoko's
I also occasionally autocross this car, and have yet to have a competition on the new control arms and axles. I had one autocross when I had one HD and held up fine.
Just thought I'd share my experiences,
Steve
BTW.. lemme know if ya got questions. Any doubts, it never hurts to talk to the source directly, Marty.. he'll be more then willing to explain the differences between his axles, and the competition's.