In NL the 5-year service plan was also limited to 100,000 kilometers. Back in 2019 I bought it for my Mk3. It was € 777,- for 5 years and included 20,000, 40,000, 60,000, 80,000 and 100,000 km services (or annually, whatever came first). It was a bargain, since just 1 service would be around € 250 to 300.
For the Mk4 it wasn't on offer any more.