Both sides need to be rebuilt. Parts (new strut inserts and top bearing mounts) will run around $250 ($125/side) and labor around $300 plus $50 for an alignment. The cost for parts will increase if the ball joints, or inner and outer tie rod ends need replacing. Parts and labor will increase if the control arm bushings or wheel bearings need replacing. I purchased complete strut/wheel/control arm assemblies at the salvage yard for $25/side (you pull). I rebuilt these during the week at night (I've got a day job too) and then swapped them out on the weekend. If there is an AutoZone in your area, they loan the strut spring compressor and tie rod end separator you'll need for free (deposit required). jp