It's amazing the things I don't know after playing guitar 5 years.

First off, have any of you ever used ernie ball hybid 9-46s? What are those like?

Secondly, how much does it cost to get a guitar set up? Me doing it myself all these years was probably really stupid, but I have trust issues.

Finally, there's a buzz on both E strigns on my guitar 18th fret. It started after my guitar got dropped about a half year ago. What is the most this would cost to fix, worst case scenario?

Thanks :)