What would be a ball park repair bill for CV joints replacement ?

Shop around and you might be able to get it done for under $100 per side. I had it done on a 1998 Taurus for $89 per side including parts. That was at a shop that only did cv joints and steering boxes. However, when I first checked around, I had quotes as high as $500 for both sides at full service garages. I checked Autozone and your parts are $47 each.