[Jeron]

Like I said above, don't worry about whether this is the cause of the vibration because it needs to be fixed ASAP regardless.

Dealers and good shops are both going to charge the same labor hours with slightly different rates.

I have no idea how the Xi comes out but I attempted a Camry a few years ago and it was going to take a lot of hammering and muscle for me to get the shaft out of the hub so I paid someone to do it. Of course I didn't pay anywhere near 1300.

Since there is so much grease still inside the wheel maybe the boots haven't been torn too long and the joints are good. A simple boot replacement should not be that much. Is the shop quoting replacement of the axle with new, rebuilding it fully or just boots?

If you live in a major metro area you should be able to find a shop that rebuilds CV's otherwise try to find a less expensive shop. Even ask the shop or a local parts store where they get rebuilt CV axles.