if the dealer is doing the work he can charge whatever he wants and replace whatever he sees fit, that could be a lot on an 02
a bare minimum parts list would be a headgasket, cam chain 4-5 seals maybe a water pump bearing but you'd be mad not to freshen up as much as possible
NTN roller mains are $65 each
short version of mains story is that crank axial play must be set large enough to prevent failure.
http://husaberg.org/mechanical/17170-definative-main-bearing-thread.html
original long version
http://husaberg.org/mechanical/5986-main-bearings-failure-must-change.html