Sometimes it's nice to get another set of eyes on a problem or small issue though, particularly if you want to test various settings and options out. Recently, I took my Sei back to Martin at The Gallery for a set-up: Yes, I can do this myself, but I wanted to discuss some options for different strings, and potential pick-up and wiring changes etc. The £35 he charged, combined with the hour or so I chatted with him about the bass - and playing through different amps, along with the work he did, and subsequent discussion afterwards (and the cup of coffee) was more than worth it in my opinion. PLUS, it was a good excuse to have a day in London and have a look around The Gallery too.
As a tutor, I have played several of my student's basses, which were apparantly set-up by the local music store upon purchasing. It is these set-ups that are usually, in my opinion, not brilliant. With this in mind, I teach all my pupils how to change strings, make small adjustments to the neck, correct the intonation and about other mantainance.
Greg