Worth considering

3rd year (after purchase) = 80% of the purchase price
4th year (after purchase) = 60% of the purchase price
5th year (after purchase) = 40% of the purchase price

... The guarantee thus begins at 80% of the purchase price and ends in the third year of warranty at 40% of the purchase price.
Whether you need this warranty extension, everyone must decide for themselves. For approximately € 10.50 per year, I've tried the times.