Those prices are way out of line for those repairs and parts some one is tring to rip you off bad
please take your car to someone else , im thinking more like $ 400 for all that would be more like it , i dont know why you would need new control arms maybe just new bushings ,unless you have wrecked the car and bent or damaged them , struts are less that $100 a pair and maybe $50 each to install at the max
my personal opinion is : some one is trying to take advantage of you

