i for one am amazed at the prices charged by the big named bike shops,evans want £75 to service forks ,another £29.95 to take the forks off the bike and put them back on,and £27,50 to bleed one brake!
diy cost me £15 to do my forks and £10 kit off ebay to bleed both brakes,i also done my sons brakes too.
so i guess you're paying for their skill and time
i am no expert,but even if i was rich i wouldnt pay them extorsionate prices.all the knowledge i gained about bikes was hands on and the internet and youtube etc.
one more thing my2001 zzr1100 fork seals were replaced at a dealers before i bought the bike,the receipt says £103 including parts labour
so thats less than mountain bike forks then