How much does it cost to change the shock absorbers both rear and front of a 1990 Honda Accord?

I bought the Shock Absorbers already I was going to try to change them but it looks to difficult. So basically I just want to know how much does it cost to replace them, if i take the shock absorbers to the mechanic? By the way I live in LA, Thank you|||tough to say, you can call and ask them they should know right off the top of their heads. I know at places like Sears Auto Center it would be 18 dollars a shock, but they won%26#039;t work with things you purchased outside of them for liability and warranty issues. Call you closest mechanic and ask him!