If I am not mistaken, the first major service on a Kawasaki is 600 miles, then not until 6,000. The 600 is an oil change, tune up and valve adjustment if needed. The 6,000 is the same, though valve adjustment is mandatory at that point.
If I were you I would just follow whatever is in the owners manual and don't worry about being "screwed" by the dealer. Just make sure he does what needs to be done so the bike will have a long life.
Richard M. Poniarski
'00 Kawasaki ZR-7