the rears are so easy to do if you have to a-la-carte it. a shop shouldnt charge you much more to put the strut assemblies together, but yes, if the shop is doing labor, it might approach about 1k in labor.
I strongly recommend you try to do as much as you can on your own. the 4th gen chassis is so easy to work on. if you have a cheap 1/2" electric impact gun, you can do nearly all of it. Maybe have the shop do the front LCAs if the ball joints are rusty, and if the rear toe arm eccentrics are seized you may have to have the shop sawzall them out, but thats about as hard as it may get.