Couple years ago I took my friend's XR600 out for a trip. It had been sitting for a year or year and a half. Two kicks and it started. Didn't leak at all.
Same with my snowblower. I haven't a clue how that thing manages to start starts!
That being said there's going to be a bell curve. If you're going to ask mechanic for a quote, presumably you were unable to kick start it doth two tries, and now you're in a different bucket.
As well, not all bikes that start are safe to ride. A mechanic may - should - have a safety minded standard of service.
