There was a long list of things, plugs, manifold gaskets which seem strange, 5 and a half hours work apparently.
I think the gaskets are to do with removing the manifolds for the valve clearance check / adjustment.
Check the schedule on your car - it started off at 25K on the first Jazz but Honda changed it to 62,500 miles. Apparently they never really need doing.
As far as I know all Jazz's have long life plugs and they're good for 75K miles.
I suppose you're hitting these limits based on time - 1yr=12,500 miles.
On all our cars I tend to stick with the dealer until it's out of warranty but after that it's a bit bonkers to use one - the reason they exist is to extract as much money out of you as possible.
We use a "specialist" (it was started by the service staff from a closed dealership) for both of the Jazz's but they do more work on other marques now than they do Honda. I took daughter's car last year when it was 6yrs old / 60K miles and we had a discussion about what would be appropriate and they did that work.
