Maya,

Maybe the battery is $70-$80US. It takes about ten minutes to remove and replace the battery. To reset the clock and enter the radio code--another two minutes.

You don't say what part of the country you're in . But that seems excessive for ANY region.

As others have said, it is very easy to do yourself:

-You'll need a 10mm wrench to loosen the bolts.
-Remove the cables.
-Lift up the retaining clip in the L side of the battery tray.
-Remove the battery and put the new one in.
-Engage the retaining clip.
-Connect the cables and tighten the bolts.
-Enter the radio code (found on the Radio Pass in your owner's book).
-Set the clock.

Use the money saved for something worthwhile!

Bryan