I don't personally own a Mercedes and haven't been able to get my (dream) Mercedes (yet) but due to my not-so-great post code and a conviction on my licence (0 points but still a conviction), I paid over £2,300 on an old-ass 145,000-mile 2003 Volkswagen MK4 Golf GTi. I'm 24 and have 1 year NCB (for various financial reasons, I unfortunately had to suddenly back out of owning and running a car TWICE on my way to a year's NCB).
Quite a sad story after reading through all of you guys running V8s with insurance bills under £1,000 but shit happens, thats life. At least my 25th birthday coincides with completion of my 2nd year NCB though so something to look forward to I suppose!