my first service per the owners manual was approx. $400 Canadian in 2018.
I do routine maintenance stuff myself keeping my bills but I t00k it to the dealer for the big service interval items until warranty period was over.
The second major service at 10,00 km was an eye watering $900 Canadian.
I took the bike to a reputable independent shop for the recommended maintenance at 40,000 Km and that was pricey but less costly than the dealer.
I am in southern Ontario and one of the big problems is that Triumph dealers are few and far between, and so one has to book service well in advance. And since the major service interval items require the tech to start with a cold engine, this means , in my case, riding to the dealer and leaving the bike overnight (which means arranging transport back and forth with no public transport availability) or trailering the bike and forth.
But the rarity of conveniently located dealers would be no better if I rode a Honda or Yamaha oo Suzuki as most motorcycle dealers around here tend to handle multiple brands ; over the years the number of dealers has shrunk and the remaining dealerships consolidate brands . And I don't even want to think about Harley Davidson; from what I hear, HD dealers' pricing on service would bring tears to your eyes and HD dealers are not exactly thick on the ground either.
As I mentioned, I look after most routine maintenance and running repairs myself and I enjoy working on the bike but I have discovered that in my advancing years I prefer riding to wrenching..
So here we are approaching the end of February and we are on the back nine of winter. Soon it will be time to stop bellyaching about the cost of ownership and paucity of dealers/service shops and to start riding again. Soon it will be out to the unheated garage to start prepping the T100 for another season.