I was gonna comment on this yesterday but i saw you were in Sydney.
Didn't even know there was a PS outside of Melbourne, but in melbourne, im guessing Sydney too; the majority of them are cunts, who work on commision like matress salesman
Im lucky enough have a fair mechanic closeby who has been exceedingly good to me, and my bike reflects it.
For A Oil change/OIL Filter. I would expect about 100 for materials, 50 for labor.
For $250-300! (aussie Dollars)
I would expect an Oil change with new Filter. Air filter Oil Clean, Coolant drain and replace, clutch/throttle cables lubed tightened, all the basic checks.
This is just a service, which they should have a set price for, so I would just ask for that next time.
Once the bike is in their hands, if it takes them an extra hour to remove something, it's their fucking problem, not yours, period.
I'm too far away to use Turn one anymore, but I'm sure Dorzun and those Sydney blokes know a good Triumph mechanic up that way