Here's the quote they gave me for my 20K mile service which includes a LOT more than just the valves. $900 USD which is likely $1200 CAD
Job:20K mile service
Triumph Bonneville T120 Black 2020 - SMTD40HL5LT972914
Check And Adjust Valve clearances, New Air Filter, New Spark Plugs, New Fuel Filter
Change oil, oil filter and crush washer. Inspect and adjust chain. Check brakes and brake fluid consistency. Check tires and inflation.
Check Coolant. Inspect all fittings, gaskets and torque settings. Perform diagnostic examination, updates and reset with Triumph diagnostic tool
Part # Part Description Qty Price Unit Extension Extension
T3500210 CIRCLIP,EXT,8X1 1 $1.48 $1.48 $1.48
T1290745 SPARK PLUG, M10X26,5 HEX 14 2 $10.46 $10.46 $20.92
T2201057 AIR FILTER 1 $39.00 $39.00 $39.00
T2401214 SEAL, FUEL PUMP PLATE 1 $34.30 $34.30 $34.30
T1218001 FILTER,OIL,OES 1 $16.46 $16.46 $16.46
T2407046 FUEL FILTER, INTERNAL 1 $50.80 $50.80 $50.80
T3601276 O RING, ID 23.7 X 2.9 1 $2.26 $2.26 $2.26
T1266002 SEAL, CAM COVER 1 $23.24 $23.24 $23.24
T1260309 SEAL,CAM COVER SCREW,TWIN LIP 4 $5.29 $5.29 $21.16
T3600199 O-RING, 18.8 X DIA 1.9 1 $1.29 $1.29 $1.29
T1268765 GASKET,COVER,ACG 1 $10.75 $10.75 $10.75
T3053005 SCREW, PAN, M7X1X12, T40, ENC 2 $1.37 $1.37 $2.74
83-0463 CASTROL 4T SYNTHETIC 10W40 3.4 $14.95 $14.95 $50.83
T3600216 O'RING, ID 9.8 X 3 2 $2.07 $2.07 $4.14
T3558989 WASHER, SEALING, 14,4X23X3 1 $1.48 $1.48 $1.48
T3500350 CIRCLIP, E-TYPE 1 $2.66 $2.66 $2.66
Parts Subtotal: $283.51
Technician Description Hours Rate Discount Labor Cost
Not Assigned 4.75 $135.00 0.00% $641.25
Labor Subtotal: $641.25
Tax: $19.84
Resolution: Recommended Repairs: Job Subtotal: $944.60