Ya got alot of variables there.
What kind of reel is it?
You can do it your self if you have the time. It's not hard,but can be time consuming depending on the reel. The explode view of your reel you got when you bought it will show you just how it comes apart and back again.
They may charge you 25/30 dollars depending on how long it will take to do the job.
Thats just a guess though......I do my own during the winter. Let me know what kind of price you get.
& Keep on Fishing !