Having just bough an FZ6, and seeing it hadn't been serviced for 2 years, (only done 4000 miles since tho), I was tempted with this kit, then found it was cheaper to buy the bits seperately!
Same site do the same Oil and Filter for £27.99, got 4 x NGK Spark Plug Iridium £26.12 on Ebay, and an Air Filter on Ebay for £15.70 Total= £69.81
Also gone for Castrol coolant so I can change it as I can't find any evidence of it being changed in the service history, 8 years old, 19k on the clock.