£1,152.60 for mine last January at MB dealer. Strut was on back order so car off the road for 10 weeks. Strut spat out of oil that spread making a pool on my garage floor over 2 ft across. Air part of strut still ok. Replacement is a relatively quick job. I needed the 360camera recalibrated as part of the repair. This strut lasted 8 months longer than the drivers side which failed in the same way. Car out of warranty and over 50k so no contribution from MB. Despite the cost of two struts it still worked out less expensive than paying for a MB warrenty over the same. Looking at what MB the warranty covers it seems likely that shocks are a consumable so may not have covered the repair, would be interesting if anyone with a car 3+ years and a warranty has had any contribution.
It’s always worth asking. But at the 50k mark and 5 years for my first strut replacement the answer was no.
When I had my second strut replaced I asked the parts department if this was a common fault. I was told that only 7 units ordered in 2021 in the UK. Mercedes airmatic compressors are a different case the parts department person said they always keep a number in stock.