4th year service cost for i20n realistic?

[Ni20ck]

My i20n is requires it's 4th year service, although only at 13,000 miles(!).
Local dealer (in Buck's) is quoting £430, which is the easy options as it maintains dealer servicing, warranty, and breakdown cover.
Just wondered if this a reasonable price?

 

[_LAH_]

Dealership prices are fixed in my country and is declared on Hyundai local website. They're far from reasonable as all dealership prices are for any manufacturer. They usually charge at least twice what an independent mechanic would but keep your warranty valid in exchange.

The prices are steady up to 7th year (70k km). At 7th year its almost double. Then goes back to normal.