If you take it to a shop it could cost anything! Honda charges allot more for the same pads, and then labor of course. Expensive.
Any good small shop should be able to do them also but price can vary a ton.
It (a shop price) will vary greatly according to quality also. The slider pins for the two caliper halves need to be cleaned and greased, etc.
Doing it yourself saves a shop rate hovering at or over $80 an hour and is fairly straight forward.
More expensive is not always better though.
In some areas you might find a really good small shop for about $25 an hour that does great work.
I have been to several small shops for many things that do great work cheap compared to others around which cost far more and do crappy work.
Best thing sometimes is find others in your area with similar stuff and ask where they get their work done when needed and if it was good work. Or do it yourself if you can which is almost always best.